Marker and Stapy

This article suggests the interactions between Marker and Stapy. The two appear to be good friends.

Episodes suggesting a friendship
In Getting Teardrop To Talk, Marker and Stapy are sitting next to each other, Marker than asks Stapy if he'll play Toss The Dirt with him, Stapy accepts to play. Later on when Foldy picks Stapy to be on her team, Marker decides to go on their team because of this.

In Lick Your Way to Freedom, Marker and Stapy kill Lollipop after she was freed from the jawbreaker.

In Today's Very Special Episode, Stapy, Foldy, and Marker plays Rock Paper Scissors.

In Questions Answered, Marker can be seen admiring Stapy's plan to cheat on the quiz.

Episodes suggesting a conflict
In Today's Very Special Episode, Stapy found it "lame" when Marker said he didn't know how to play Rock Paper Scissors. Stapy was very frightened when Marker played Four while they were playing Rock Paper Scissors.

Trivia

 * Stapy appears to be Marker's best friend, but Foldy is Stapy's best friend.
 * Stapy and Marker's game of Toss The Dirt was very crucial to Four (and X) visiting Goiky (or wherever BFB is set) as it sets up a butterfly effect which the game convices Dora to go digging, she digs up some Cyanide, which Flower quickly caught and convinced Black Hole to open it, 4 crushes Black Hole to a smaller size, saving everyone. Who is accompanied by X.