i never completed origami king cos i hated the gameplay btw so idk about some of the late game characters personalities i stopped after the toad but i have played the whole series besides that

headcanon voices:
Goombella: Lisa Reimold
Huey: Zeno Robinson
kersti: Reba buhr
bow: Anjali Kunapaneni
bombette: Cassandra Lee Morris
toad researcher (i forgot what the job is called): Ben Balmaceda