Tree

Tree was one of the 30 recommended characters that could've joined the game. Tree was featured in episode 17, the same episode where Tree performed an audition to get the viewers to vote for him. Alternate names for Tree includes "Treeyee" and "Whispy Woods".

Coverage
In Reveal Novum, Tree, along with Naily, Barf Bag and Saw, only got 3 of the 450 votes which is 0.88% of the votes. That was certainly not enough to join the game and the 4 characters were shot into the Locker of Losers. Tree could be related to Grassy and Leafy.

Tree has a cameo in Yeah, Who? I Wanna Know, who got 49 votes, which was the third least, so s/he didn't make it into BFDIA.

In Get in the Van, Tree wasn't seen in the episode, yet Match and Bubble pretended they were Tree (by putting Gelatin atop their heads). Firey's Speaker Box didn't notice.