I have a Mega or ten sitting around. I'll just show off this one though, since I like it a lot.
Mega Girafarig
Type: Normal/Psychic
Ability: Simple
HP- 70
Atk- 100 (+20)
Def- 85 (+20)
Sp. Atk- 110 (+20)
Sp. Def- 85 (+20)
Spe- 105 (+20)
Total: 555 (+100)
Mega Girafarig is a really simple design. It isn't too impressive in the stats department, sure. But Simple changes that. That probably doesn't seem like too much. Buuut Girafarig does keep a few nice stat raising moves, not even counting potential additions my fangame will likely give it. There's a lot you can do with it, really.