Tree usually acts stern but reasonable towards others, however he can unintentionally come off as being rude to his friends and teammates.
In "The Reveal", he's hit by a knife thrown by the Announcer.
In "Lick Your Way to Freedom", "Why Would You Do This on a Swingset", and "Today's Very Special Episode", Tree asks Black Hole to do the challenges. Tree also stated that Black Hole could suck up the forks.
In "Fortunate Ben", he gives Black Hole a very strange look when he's about to obliterated by Four.
In "Get to the Top in 500 Steps", he watches as Black Hole saves Bomby's life.
In "Return of the Rocket Ship", when Black Hole convinces his team that they need to recover Pillow, Tree asks Black Hole if they should get Four to bring her back.
In "Don't Lose Your Marbles", Tree is seen smiling at Blocky while he was looking for a red ball.
In "The Liar Ball You Don't Want", Tree somehow gets stuck inside Bottle during the challenge. It is still unknown how Tree was able to get stuck there in the first place. Tree himself didn't seem to harbor any negative feelings towards Bottle during the four episodes that he was trapped in her, though he looked angry about it in the "Enter the Exit" intro.
In "Get to the Top in 500 Steps", Tree is still stuck inside Bottle, but has made progress in getting out without resulting in breaking out. This shows that Tree cares about the well-being of Bottle. Tree then commands Bottle to walk over to Four so that they could revive Pie, Bottle complies.
In "Return of the Rocket Ship", Tree asks Four to recover Bottle.
In "Getting Teardrop to Talk", when Four suddenly stops talking and doesn't answer anyone's requests to start the first contest, Tree tells him to quit his shenanigans and is promptly screeched by Four.
In "Today's Very Special Episode", Tree helps block the forks from hitting Four from fear of being zapped to death.
In "Fortunate Ben", when Four runs out of words to rhyme assemble with, Tree asks "Assemble or?", this makes Four screech him. When Tree reads his fortune, he asks Four where the fortunes came from.
In "Get to the Top in 500 Steps", after sitting through Four and Bottle's conversation, Tree tells Four to recover Pie.
In "Return of the Rocket Ship", when Four has Pillow in his mouth, Tree tells Four that he hopes he doesn't swallow only for Four to swallow Pillow, which makes Tree give Four a disgruntled look. When the contest starts, Tree asks Four to recover Bottle. Later when the team asks Four to recover Pillow, Four tells them she isn't dead. Tree tries to make sense of this by asking that if she was eaten, she'd be digested. When Fours says that isn't the case, Tree sighs and decides his team will have to just investigate Four's mouth, he then struggles to pry Four's mouth open.
Status: Minor enemies
Status: Minor enemies
In "Today's Very Special Episode", Tree criticized Pen for asking Black Hole to do the challenges, despite asking Black Hole to do it seconds later. When the challenge is over, Tree puts his hand on Pen, waiting to see if either they or A Better Name Than That will be up for voting.
In "Four Goes Too Far", when Pen hears a noise, Tree reminds his team to keep their eyes closed, not that Pen listens.
In "Return of the Rocket Ship", when Tree tries to open Four's mouth, Pen tells Tree to step aside and Tree watches as Pen manages to get Four to open his mouth.
Status: Friends most of the time
In "Get to the Top in 500 Steps", Tree tells Four to recover Pie after she was killed by Flower in the contest.
In "This Episode Is About Basketball", while he was stuck in Bottle, Pillow tells him to pull his weight in the challenge.
In "Return of the Rocket Ship", when Pillow is being screeched while in Four's mouth, Tree says that he hopes Four doesn't swallow. when Black Hole reminds his team that Pillow died, Tree starts arm waving, meaning he doesn't care, though he is never actually seen doing so. When he and the team realizes they should be caring about Pillow's death, they try to get Four to recover her.
They don't interact with each other that much but are still friends since they are on the same team.
While the two haven't interacted once, Tree tells Liy that he thinks getting Teardrop to talk isn't worth any effort.
A Better Name Than That
When the team repeats the word "treason" because of Golf Ball drawing in the contest, Tree says "I'm in what?".
In "Four Goes Too Far", Tree tells the team to close their eyes so that they wouldn't get the twinkle. Strangely, no one on the team listens to him except Pie and then Pen later.