Lumpy is one of the main characters of Happy Tree Friends, and one of the four primary characters of the show, along with Cuddles, Giggles, and Toothy.
He is a light blue moose with low I.Q., bad teeth (although they are clear white), distorted eyes and mismatched antlers. He is known to be the big brother, or perhaps babysitter of many of the other characters. He usually means well but he's clumsy and extremely stupid. Furthermore, he screams like a girl. His usual catchphrase is "Mmm-hmm!" when he thinks he solved a problem or when he is satisfied.
- Happy Tree Friends Wiki