Kosh

Kosh is a supportive hero in The Land Before Time film series. An irrirated Ankylosaurus, Kosh developed mutual compassion and friendship with the grown up dinosaurs, led by Daddy Topps, providing assistance and moral support to the pack. He is briefly featured in the finale of Heroes vs. Villains War, although it is unknown if he is actually supposed to be presented or if he is only there in the footage used.

Heroes Vs Villains War
Kosh only appears in finale of the war, as one of the dinosaurs threatened by Hades' pet, the Hydra. Other than that, he doesn't make another appearance in the tournament.