What Extinct Animal Would Be the Perfect Quirky Sidekick?

I’ve been brainstorming ideas for a fun, offbeat indie adventure game, and I keep coming back to the idea of having an extinct animal as a sidekick. There’s something so fascinating about bringing these ancient creatures to life in a playful way. I’m curious if you could pick any extinct animal to join the protagonist on their journey, which one would it be? And what kind of personality would they have?

For example, I could see a microraptor being a mischievous but loyal companion, always darting ahead to scout or steal shiny objects. Or maybe a glyptodon as the team’s tank, slow-moving but incredibly protective, with a dry sense of humor. What do you think? I’d love to hear your creative takes!