Pie is one of the 30 recommended characters in episode 17 and 18. Along with Remote and Grassy, Pie only received 7 votes, placed 16th and was sent into the Locker of Losers.
In the audition tape, as well as in episode 16 (which marks Pie's first appearance), Pie is seen to be an explosive blueberry pie, and it was used as a cake at Cake at Stake.
In Yeah, Who? I Wanna Know, Pie only received 104 votes and placed 42nd which wasn't enough to join BFDIA and was sent to the LOL.