Why not just have Midna ride on top of wolf link? Like have them as one character. The standard moves would just be wolf link attacking like normal. Midna could use her hair/hand as there grab move.
Up B:Midna teleports wolf link like in the game.
B:Midna throws a rock or something from the twilight.
Over B:Wolf link dashes and if there is a enemy in his path he jumps and does the jump move he has in the game, where he grabs on to a enemy and bites them.
Down B:Same as the move in the game with the red circle.

Final smash: midna uses the fused shadows.