Hagurumon it arguably a gen I Digimon too, by the way. One of his earliest appearances (Digimon Pendulum v5) was in the line of Virtual Pets that Tentomon (v1), Gatomon (v1.5), and Gomamon (v2) debuted in. Hagurumon also appears near the end of the first season of the anime.
(Stoked to play this. Also, I agree with the…