Bowman’s a tough one to figure out! The temptation is to go with an all grass/flying team, because it’s Bowman, but in the effort of both balance and making sense I branched out a little. I tried to think of the things Bowman might be able to actually find in the forest.
Breloom! An adorable mushroom that’s ready to fight.
Leavanny, an elegant bug/grass pokemon.
Ninjask, a speedy flying/bug pokemon. It’s a cicada, which I imagine there are plenty of those in the woods.
Furret, a fluffy adorable little guy. Bowman can throw him acorns from up in the trees.
Sylveon, the quintessential fairy type.
For a starter, Bowman would probably choose Froakie. So he’d have a Greninja to cap off his team.