I would choose Weavile. My team IRL would be:
Weavile - Night Slash, Ice Punch, Swords Dance, Low Kick
Gengar - Shadow Ball, Focus Blast, Pain Split, Thunderbolt
Crobat - Taunt, Toxic, Brave Bird, Super Fang
Milotic - Hydro Pump, Recover, Ice Beam, Dragon Pulse
Cresselia - Psychic, Ice Beam, Thunder Wave, Moonlight
Infernape - Fire Blast, Close Combat, Grass Knot, Stone Edge