Diamond

Diamond (also called Crystal in the vote) is a contestant who participated in BFDI Mini Again. They were recommended in "Reveal Novum" by kiki3510. They were

eliminated in episode 3.

Appearance
Diamond is a diamond with no outline, consisting of the colors blue, light blue, and white. They have no limbs and unlike Ruby, the top of them is always shown instead of just the side. When moving, they are seen flipping themselves over repeatedly like in "Swim to the Other Side".

Personality
Due to their brief stay in the competition, they have no defined personality. However, they seem to go with the flow, like with Deadly's plan in the first episode.

Trivia

 * Diamond was referred to as "Crystal", their name from "Return of the Hang Glider", in "We asked TikTok to VOTE the best object - BFDI Mini".