Pikachu,
Charizard,
Bulbasaur,
Squirtle,
Snorlax,
Sceptile,
It would be nice if prior to the sinnoh league, he actually got back the pokemon he promised to that he would. A montage of reclaming Pigeot, Primape, Charizard, Squirtle would be pretty sweet (unlikely) but sweet.