This is how Takuya would work if he was in a Mega Man game. It's labeled Mega Man 10 because the Takuya recolors are for each of MM10's weapons. (from left to right: Blade, Pump, Commando, Chill, Sheep, Strike, Nitro, Solar, Enker, Punk, Ballade)

In a Classic series game, Takuya would have Bass' ability to dash, as well as the ability to cover more ground with a dash jump. He would have a chargeable attack, yet on level 2 charge he releases an ice wave, and on level 3 charge, he lets out a powerful Aurora Beam. However, the Aurora Beam, though a strong attack capable of clearing anything in its path, leaves Takuya immobile for the two seconds it is active. Takuya will also stop if he shoots it while running. It can land a total of six damage (3 units per hit) on a boss, but it's a risky move.

EDIT: Added MMEN weapon colors for the hell of it.