I'll do mine from each gen as well.
Gen.1: Pikachu, Charmander, Pideotto, Mew
Gen.2: Cyndaquil, Totodile, and Chikorita. (A.K.A the starters)
Gen.3: Mudkip, Rayquaza, Salamence
Gen.4: Turtwig, Luxray, Rioulu, Arceus, Dialga, Shaymin
Gen.5: Pokabu and Zekrom