Episodes Suggesting A Friendship
In War De Guacamole, Knife asked OJ and Nickel if they wanted to see the wonders of static electricity. Nickel responds yes, and Knife then sneaks up on Marshmallow and shocks her. Knife, Nickel and OJ laugh at Marshmallow as Knife points out that it is she is "so much fun to mess with".
Episodes Suggesting A Conflict
In The Arena of Death, Nickel threw a boomerang rock at Pepper causing Salt to jump down attemoting to save her. OJ throws a rock in revenge at Nickel, but Paintbrush jumped in the way to save him, but he/she and Nickel were both hit.