Original idea by Angry2, taken over from dsm77773
Approved for SM by The Immortal and scpinion
Thanks Centinela for the new awesome banner!
One of the main aspects of Pokémon is evolving. Since the very beginning, back in RBY, we saw our Pokémon evolve to the next stage of what we call "evolutionary line". They give Pokémon new moves/abilities/typing and also stats! But what if we could cross these evolutionary lines? That's what you can do in this metagame!
You can switch it by nicknaming your mon the name of the line you want. It gives the new stats and access of a maximum of 2 moves from the evolutionary lines' movepool. Abilities are replaced by the final form abilities. If the evolution gets a new secondary typing, the cross-evolved Pokémon will get it too (or replace its old second type).
Complicated? Want an example? Ok!
Klang is a Stage 2 that can evolve into a Stage 3, so it can "cross-evolve" with a Stage 3 Pokémon such as Gallade. Gallade has +30 HP, +90 Attack, +30 Defense, equal Special Attack, +60 Special Defense and +30 Speed than Kirlia. Its abilities are Steadfast and Justified, and has access to Close Combat and Knock Off. It also gains a secondary Fighting type. As a result:
Gallade (Klang) @ Lum Berry
Ability: Justified
New Stats: 90/170/125/70/145/80
New typing: Steel/Fighting
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Shift Gear
- Gear Grind
- Close Combat
- Knock Off
Klang has now access to two extra moves to balance its horrendous natural movepool. Steel-type grants it a lot of set-up opportunities, aided by a 90/125/145 bulk and a monstrous Attack to wreak havoc.
Rules:
Mechanics:
Bans:
The best base Pokémon start out with all-around good stats, good typing, and access to a deep movepool already.
The best cross-evolutions are the ones that offer the biggest stat boosts, access to a deep movepool, good abilities and even a favorable type change.
Other great cross-evolutions include Pokémon which give huge boosts in a single stat or have access to a coveted ability or move.
Milotic (Spritzee) @ Leftovers
Ability: Marvel Scale
EVs: 248 HP / 252 Def / 8 SpA
Bold Nature
IVs: 0 Atk
- Moonblast
- Calm Mind
- Rest
- Sleep Talk
In many ways, a straight better CroCune. Insane bulk coupled with Marvel Scale make it very difficult to KO while Resting, allowing it to keep boosting. It also counters many threatening Bug-, Fighting- and Dark-types, such as Scyther and Choice-locked Magmar x Gallade.
Gyarados (Gligar) @ Leftovers
Ability: Intimidate
EVs: 248 HP / 252 Def / 8 SpD
Relaxed Nature
IVs: 0 Spe
- Stealth Rock / Defog
- Roost
- Earthquake
- U-turn / Knock Off / Roar
Once the very best Pokémon in Cross Evolution, Gligar x Gyarados will definitely keep up being a big threat due to its insane defensive and offensive capabilities. It is pretty versatile too, being able to run physically or specially defensive sets, and more offensive Dragon Dance ones.
Q&A:
Q: I still find the metagame's mechanics difficult to understand.
A: Last gen, both Eevee General and tehy made this awesome visuals which might help you out:
Stage 1 Charmander
Stage 2 Primeape ✔
This is a legal evolution because Charmander is a Stage 1 and can evolve under normal circumstances.
Stage 2 Charmeleon
Stage 2 Primeape ✘
This is an illegal evolution because Charmeleon is a Stage 2 and cannot evolve into another Stage 2.
Stage 3 Charizard
Stage 2 Primeape ✘
This is an illegal evolution because Charizard cannot evolve under normal circumstances.
Stage 2 Ivysaur
Stage 3 Charizard ✔
This is a legal evolution because Ivysaur is a Stage 2 and can evolve under normal circumstances.
Stage 2 Primeape
Stage 3 Charizard ✘
This is an illegal evolution because Primeape cannot evolve under normal circumstances.
Stage 1 Mankey
Stage 3 Charizard ✘
This is an illegal evolution because Mankey is a Stage 1 and cannot evolve into a Stage 3 Pokemon.
Q: How does Eviolite work?
A: Eviolite does not work on any cross-evolved Pokémon.
Q: What about signature items, such as Light Ball or Thick Club?
A: They only work on vanilla Pikachu and vanilla Cubone/Marowak (and their Alolan forms), respectively. Again, they don't work on any cross-evolved Pokémon, even if it's nicknamed "Marowak", or it's Pikachu with another nickname, etc.
Q: What about exclusive Z-moves?
A: Yet again, they don't work on cross-evolved Pokémon. So Eevee x Xatu cannot use Extreme Evoboost, etc.
Q: Is weight affected? What if my cross-evolution's weight drops below 0?
A: Weight changes weren't considered for the initial metagame, yet they are implemented. If weight drops below 0 when cross-evolving, it is set to 0.1 kg.
Q: Why is _____ moveset illegal?
A: Make sure you didn't inherit more than 2 moves from the cross-evolution.
Resources:
On the radar:
Gen 7 Cross Evolution has been playable for several months now and it is clear that the metagame needs suspects/bans of some overwhelming forces. The following Pokémon are on the radar as potentially suspect-worthy (note that this isn't the same as ban-worthy). Discuss about these Pokémon here! (Reasoning)
Approved for SM by The Immortal and scpinion

One of the main aspects of Pokémon is evolving. Since the very beginning, back in RBY, we saw our Pokémon evolve to the next stage of what we call "evolutionary line". They give Pokémon new moves/abilities/typing and also stats! But what if we could cross these evolutionary lines? That's what you can do in this metagame!
You can switch it by nicknaming your mon the name of the line you want. It gives the new stats and access of a maximum of 2 moves from the evolutionary lines' movepool. Abilities are replaced by the final form abilities. If the evolution gets a new secondary typing, the cross-evolved Pokémon will get it too (or replace its old second type).
Complicated? Want an example? Ok!
Klang is a Stage 2 that can evolve into a Stage 3, so it can "cross-evolve" with a Stage 3 Pokémon such as Gallade. Gallade has +30 HP, +90 Attack, +30 Defense, equal Special Attack, +60 Special Defense and +30 Speed than Kirlia. Its abilities are Steadfast and Justified, and has access to Close Combat and Knock Off. It also gains a secondary Fighting type. As a result:

Gallade (Klang) @ Lum Berry
Ability: Justified
New Stats: 90/170/125/70/145/80
New typing: Steel/Fighting
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Shift Gear
- Gear Grind
- Close Combat
- Knock Off
Klang has now access to two extra moves to balance its horrendous natural movepool. Steel-type grants it a lot of set-up opportunities, aided by a 90/125/145 bulk and a monstrous Attack to wreak havoc.
Rules:
Mechanics:
- You can "cross-evolve" your Pokemon by naming them after the intended Pokemon. So for example you nickname your Ponyta "Dugtrio," giving it +25 HP, +45 Attack, +25 Defense, +15 Special Attack, +25 Special Defense, and +25 Speed, and access to Sand Veil, Arena Trap, and Sand Force.
- Evolution is limited so that Stage 1, 2, and 3 are matched accordingly. Ponyta is a Stage 1 Pokemon and can evolve into any Stage 2 but it cannot evolve into a Stage 3, so you couldn't name it Venusaur or Charizard, but you can name it Ivysaur or Charmeleon. Same goes for Ivysaur not having access to Dugtrio, but it does has access to Alakazam and Gengar.
- Pokémon that cannot evolve cannot cross-evolve either.
- Cross-evolved Pokémon get the abilities from the line they chose. So for example, crossing Haunter with Alakazam, you get Inner Focus, Magic Guard or Synchronize as possible abilities.
- Cross-evolved Pokémon have the movepool of the base Pokémon. You can inherit up to 2 moves from the cross-evolution as well. Illegallities are removed on cross-evolved Pokémon.
Bans:
- Getting Huge Power, Pure Power and Shadow Tag via cross-evolution is banned.
- Cross-evolving with Shedinja, Solgaleo and Lunala is banned. Further bans will be considered if needed as the metagame evolves.
- Sneasel as base Pokémon is banned.







Milotic (Spritzee) @ Leftovers
Ability: Marvel Scale
EVs: 248 HP / 252 Def / 8 SpA
Bold Nature
IVs: 0 Atk
- Moonblast
- Calm Mind
- Rest
- Sleep Talk
In many ways, a straight better CroCune. Insane bulk coupled with Marvel Scale make it very difficult to KO while Resting, allowing it to keep boosting. It also counters many threatening Bug-, Fighting- and Dark-types, such as Scyther and Choice-locked Magmar x Gallade.

Gyarados (Gligar) @ Leftovers
Ability: Intimidate
EVs: 248 HP / 252 Def / 8 SpD
Relaxed Nature
IVs: 0 Spe
- Stealth Rock / Defog
- Roost
- Earthquake
- U-turn / Knock Off / Roar
Once the very best Pokémon in Cross Evolution, Gligar x Gyarados will definitely keep up being a big threat due to its insane defensive and offensive capabilities. It is pretty versatile too, being able to run physically or specially defensive sets, and more offensive Dragon Dance ones.
Q&A:
Q: I still find the metagame's mechanics difficult to understand.
A: Last gen, both Eevee General and tehy made this awesome visuals which might help you out:



This is a legal evolution because Charmander is a Stage 1 and can evolve under normal circumstances.



This is an illegal evolution because Charmeleon is a Stage 2 and cannot evolve into another Stage 2.



This is an illegal evolution because Charizard cannot evolve under normal circumstances.



This is a legal evolution because Ivysaur is a Stage 2 and can evolve under normal circumstances.



This is an illegal evolution because Primeape cannot evolve under normal circumstances.



This is an illegal evolution because Mankey is a Stage 1 and cannot evolve into a Stage 3 Pokemon.
A: Eviolite does not work on any cross-evolved Pokémon.
Q: What about signature items, such as Light Ball or Thick Club?
A: They only work on vanilla Pikachu and vanilla Cubone/Marowak (and their Alolan forms), respectively. Again, they don't work on any cross-evolved Pokémon, even if it's nicknamed "Marowak", or it's Pikachu with another nickname, etc.
Q: What about exclusive Z-moves?
A: Yet again, they don't work on cross-evolved Pokémon. So Eevee x Xatu cannot use Extreme Evoboost, etc.
Q: Is weight affected? What if my cross-evolution's weight drops below 0?
A: Weight changes weren't considered for the initial metagame, yet they are implemented. If weight drops below 0 when cross-evolving, it is set to 0.1 kg.
Q: Why is _____ moveset illegal?
A: Make sure you didn't inherit more than 2 moves from the cross-evolution.
Resources:
- Cross Evolution is currently playable in the ROM server.
- A lot of analytical work was done for Gen 6, you can find the resources here. Most is still valid, might be a bit outdated since it doesn't include the new Gen 7 data.
- Some replays: 1 2[Played with initial banlist]
- Quick overview of new gen 7 additions by urkerab
- Gen 7 cross-evolutions spreadsheet by Anaconja
- Viability Rankings
- Full cross-evolution spreadsheet (including Gen 7 data) by Sasha the Sylveon
- Cross Evolution's Hub
10/4/2016 - Original, OU-based metagame.
23/7/2016 - Change to Ubers banlist. Scyther, Archen and Sneasel as base Pokémon, and Gyarados as a cross-evolution are unbanned.
2/1/2017 - Gen 7 re-approval.
5/2/2017 - Gen 7 Thread is up.
8/2/2017 - Voting on Beat Up starts.
15/2/2017 - Sneasel is quickbanned from Cross Evolution.
17/2/2017 - Solgaleo and Lunala as cross-evolutions suspect announced.
6/3/2017 - Unanimous ban on both Solgaleo and Lunala as cross-evolutions.
30/4/2017 - Gligar's suspect test announced.
15/5/2017 - Gligar avoids ban with a 33.33% ban vote.
23/7/2016 - Change to Ubers banlist. Scyther, Archen and Sneasel as base Pokémon, and Gyarados as a cross-evolution are unbanned.
2/1/2017 - Gen 7 re-approval.
5/2/2017 - Gen 7 Thread is up.
8/2/2017 - Voting on Beat Up starts.
15/2/2017 - Sneasel is quickbanned from Cross Evolution.
17/2/2017 - Solgaleo and Lunala as cross-evolutions suspect announced.
6/3/2017 - Unanimous ban on both Solgaleo and Lunala as cross-evolutions.
30/4/2017 - Gligar's suspect test announced.
15/5/2017 - Gligar avoids ban with a 33.33% ban vote.
On the radar:
Gen 7 Cross Evolution has been playable for several months now and it is clear that the metagame needs suspects/bans of some overwhelming forces. The following Pokémon are on the radar as potentially suspect-worthy (note that this isn't the same as ban-worthy). Discuss about these Pokémon here! (Reasoning)
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