Zweilous
PvE Analysis
Just evolve it into Hydreigon if you want to use it in PvE....
PvP Analysis
 Dragon Breath +  Body Slam and  Dark Pulse |
|---|
Mix Altaria and Vigoroth and you get Zweilous. The two-headed dragon brings very consistent damage with Dragon Breath and Body Slam, whether or not the opponent has shields available. Dark Pulse is the secondary charged move of choice. On its own, it's a stronger move than Dragon Pulse, and Dragon Breath deals enough dragon damage, so Dark Pulse provides meaningful coverage against top Psychic- and Ghost-type threats in the game.
| Great League | |
|---|---|
Zweilous is a decent choice in the Great League thanks to its rare typing, decent stats, and fairly spammable moveset. It is largely outclassed by Guzzlord, however, as the latter's superior stats and wider coverage tends to outperform Zweilous the vast majority of the time. However, a Great League eligible Guzzlord is considerably more difficult to obtain, so Zweilous can act as a stand-in for some players. | |
| Ultra League | |
Guzzlord is far better here, especially with Zweilous not reaching the CP cap. | |
| Master League | |
Don't bring a baby to a godfight. Leave Zweilous down in Great League. | |
Comprehensive DPS/TDO Spreadsheet
Attackers Tier List
Necrozma
Great League PVP Tier List
Ultra League PVP Tier List
Dusk Mane Necrozma
Dawn Wings Necrozma
Mega Latios
Latios
Pokemon- Best Attackers by Type
Dynamax Tier List
Master League PVP Tier List
Genesect
Annihilape
Solgaleo
Kyurem
Machamp
Excadrill
Tyranitar 
Charizard
Kingler
Genesect - Chill Drive
Latias
Clefable
Feraligatr
Dragonite
Gengar
Mega Latias
Ursaluna
Lunala
Metagross
Palkia (Origin Forme)
Cosmog
Gardevoir
Groudon
Steelix
Drampa
Venusaur
Snorlax
Dialga (Origin Forme)
Giratina (Origin Forme)
Gyarados
Zygarde (Complete Forme)
Galarian Weezing
Giratina (Altered Forme)
Flygon
Alolan Sandslash
Eevee
Clodsire
