(I like Dawn better as the protagonist but that probably won't happen.)

My thoughts:

Torterra (Starter that goes along with him the most, also complements him being the slow one as Barry calls him, while Barry gets Infernape)

Togekiss (egg from Cynthia)

Glaceon/Leafeon (Bebe's Eevee)

Porygon-Z (Gift in Veilstone)

Lucario (egg from Riley)

(Giratina?)