Griff is basically a talking blue blob—think Plue's chattier cousin. His friends call him Griff, and he's weirdly devoted to Plue, constantly calling him "Master Plue" and praising him. Size-wise, they're pretty similar, but unlike Plue, Griff can actually speak.
He's got some weird shape-shifting tricks up his. well, he doesn't have sleeves, but he can puff up different parts of his body and stretch his limbs when he needs to. As the group's cartographer, he's actually useful to have around—when he's not being a complete creep. He's got a pretty well-earned reputation as a pervert, especially after getting caught spying on Elie more than once throughout the series. Fans often note this becomes a running joke, though it's pretty uncomfortable if you think about it too hard.
Content compiled by AnimeList.moe from publicly available sources.
