Slot 1 (medicham) @ Medichamite
Ability: Pure Power
EVs: 16 HP / 240 Atk / 252 Spe
Adamant Nature
- High Jump Kick
- Zen Headbutt
- Ice Punch / Fake Out
- Bullet Punch / Fake Out
Basically just standard Mega Medicham, but with the speed of a +1 Adamant Mega Charizard X, and 100% accuracy on its STABs (particularly important for HJK). It loses its defences, but it was always a glass cannon anyway, so I can't see that being too troublesome.