X

Recovery: As shown in "B.F.B. = Back From Beginning" onwards , X can recover contestants using their hands, just like Four. Deletion: Also shown in BFB 28, X can "de-spawn" or delete hosts (and possibly contestants) by snapping their fingers, as done to Purple Face. It is unknown whether or not the victim has to be in a certain condition for them to be able to do this. De-spawning: Once again shown in BFB 28, X can kill contestants by using lasers that can vaporize contestants, like Four. This was first used on Teardrop when she couldn't prove she wouldn't quit BFB. This ability is similar to Four's "Zappies" ability. This is also the only time someone has been de-spawned onscreen. Self-cloning: Once again demonstrated in BFB 28, X can clone themselves. This was shown when Teardrop was despawned, as X (who was in challenge 16) after vaporizing Teardrop, X appeared all the way back in episode (theoretical, this could be teleportation). In Outbreak at Stake they are seen cloning himself. Zappies: In "Claustrophobe's Nightmare" and "The Great Goikian Bake-Off", they use this ability. In the former, they use it to attempt to destroy the claw machine with Four, but instead made Match, Book, and Donut dizzy and also zap away the contestants. Igniting: In BFB 28, with a snap of their fingers, X can automatically set themselves on fire. Paint creation: In "The Power of Four", X is shown to share Four's ability to fire paint from their hand, as they use it to tag the contestants.

Pain resistance: When Pie dislocated their leg, they took it with no more than an "Ow!". Shape-shifting[debatable]: As shown in "What Do You Think of Roleplay?", both X and Four can shape-shift, or change their physical appearance. Heat resistance: As shown in "Return of the Rocket Ship", X was able to survive in molten magma/molten iron, as well as in "How Loe Can You Grow?", X was able to stay alive when being sunburned. Also, in "Chapter Complete", X was able to stand on the sun without any issue. G-force resistance: X was able to remain stable even after being flung towards Earth's core at 2,763 miles per hour (or 4,446 kilometers per hour) in "Return of the Rocket Ship". Strength: X broke through the earth's crust with no tools or assistance in "Return of the Rocket Ship". They also lifted the heavy rocks without struggling in "Take the Tower". Telekinesis: When X snaps their fingers, they can make things float. Super speed: In "Who Stole Donut's Diary?", X was able to run from the courtroom to where Donut's diary was returned to, and back. Thermoregulation: X can change the temperature resistance of other characters by snapping their fingers.

Multipotency: Like Four, X has been shown to be able to do similar things that Four can do, however, they aren't as experienced as Four. Throughout the series, X has learned abilities that previously only Four could do, such as recovering. Flight: As shown in "Getting Teardrop to Talk" and "Fortunate Ben", X has the ability to float in mid-air. In "Get to the Top in 500 Steps", they levitated to the top of the viewer's screen. In "The Four is Lava", they float right above Four. Both Four and X tend to idly stare at the viewers before the ability is used. Teleportation: They can also teleport, as they got back up to his platform after being knocked back by one of their baskets in "Getting Teardrop to Talk" and teleported to Firey and Four in "Who Stole Donut's Diary?", as well as away from the Waterfall in "The Power of Four". Rapid Construction: They can also build quickly, as they built the challenge station for "This Episode Is About Basketball" in 3 seconds (3:26 - 3:29). Regeneration: In "Enter the Exit", X was shown to heal their leg almost immediately after Pie dislocated it to make a four. It also seems that they can reattach entire limbs with nothing but bandages in "Fortunate Ben", however it did take them a full episode in this case.

X seems to be much more friendly than their friend Four, and is usually seen to be quite happy and friendly towards the contestants. However, X also seems to be quite soft, as they cry after Four stated that nobody noticed their disappearance (despite Cloudy asking about X), and became frightened after Four screeched at them and when Snowball threatened them in "This Episode Is About Basketball". He has a squeaky voice.

They can also be considered a bit ignorant, such as thanking the ground for "catching" Beep after they fell from their plane, or even asking to get screeched by Four. They can also show to get very nervous under pressure. As they host in "This Episode Is About Basketball", they're very hesitant while talking and tends to mess up things, such as reading the votes backwards when Free Food was up for elimination.

X is overall quite docile by nature and remains loyal to Four, even after the times Four has mistreated them. In "Fashion For Your Face!", they have become more confident in hosting. However, in "A Taste of Space", they show a more irritable, somewhat bratty side to their character as they begin subtracting points from the teams for petty and minor reasons.

Notably, in "B.F.B. = Back From Beginning", it is shown that X can be pushed to their limits. When they mistakenly believed Teardrop wanted to quit BFB and didn't care, they shot some sort of zappies out of their eyes which instantly killed Teardrop. It can be assumed that Four's abilities are not unique.