Alright:
Turtwig (must solo 5 gyms, can only use tackle, crunch and stab attacks)
Magmar (no 4th gen moves)
Porygon (Bob's conversion/conversion2 rule)
Hoothoot (no normal attacks, cannot fight ground or psychic types)
Drifloon (stabs only, must know calm mind)
Buizel (only special attacks...