Keep in mind that since this is meant to be for a video game/anime champion, there aren't any held items. Let me know what you think:
Kommo-o (F)
Ability: Soundproof
Tera Type: Steel
EVs: 252 Atk / 4 SpA / 252 Spe
Naive Nature
- Stealth Rock
- Clanging Scales
- Drain Punch
- Fire Punch
Basculegion (M)
Ability: Mold Breaker
Tera Type: Fighting
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Last Respects
- Psychic Fangs
- Waterfall
- Agility
Toxtricity (F)
Ability: Punk Rock
Tera Type: Normal
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Overdrive
- Shift Gear
- Sludge Bomb
- Psychic Noise
Lycanroc-Dusk (M)
Ability: Tough Claws
Shiny: Yes
Tera Type: Dark
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Accelerock
- Crunch
- Play Rough
- Taunt
Incineroar (M)
Ability: Intimidate
Tera Type: Ghost
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Darkest Lariat
- Flame Charge
- Swords Dance
- Earthquake
Corviknight-Gmax (M)
Ability: Mirror Armor
Tera Type: Stellar
EVs: 248 HP / 8 Atk / 252 Def
Impish Nature
- Brave Bird
- Iron Head
- Body Press
- Roost