Four is an algebralian, the host of Battle for BFB, "The Power of Four", and the non-canon one-episode series, Battle for Permission to Meet 10. Four and his co-host X first appeared as the main protagonists in the 2008 video "X Finds Out His Value".

— Four and Two, What's Up Bell's String? This article lists the interactions between Four and Two. Four and Two are shown to be frenemies as of "Balancing P.A.C.T.". In "Balancing P.A.C.T.", Gaty mentions the relationship between the two of them, stating that "distance has really helped Two with Four as well".

"Lick Your Way to Freedom" is the 2 nd episode of Battle for BFDI, the 46 th episode in-universe and the 33 rd episode overall. It was released on Friday, November 17, 2017 at 12:21:44 PM PST (GMT-8), exactly 2 weeks after the previous episode.

Since two was introduced in BFB 16, i always wanted to see four and two fighting, but as there no any animation about that, why not doing myself?

4x2 is the poly ship between Four, X, and Two from the Battle for Dream Island fandom. As Four becomes upset with Two convincing his contestants to switch to their own show, X offers Four a juice box to help him feel better. Four thinks that X will just switch to Two's show as well and as X tries to explain his thoughts, Four tells him to just go.

4x is the non-binary ship between Four and X from the Battle for Dream Island fandom. Four seems to be caring for X, as he helps him find his value, which happens to be 7. Four's behavior towards X is a bit more mean-spirited.

Four is a poorly drawn fourth numeral of the Arabic number system (the "open" version). They are mainly blue with their limbs being lighter colored. They have white sclera with black pupils.

Battle for BFB [] Four gets angry when he's reminded of Two when splitting the contestants into two teams. When announcing that the Have Nots are up for elimination for the second time in a row, Four is once again reminded of Two when he holds up two fingers and angrily looks at them.

With a built-in battery that’s rechargeable through USB-C, Ice Cube glows brighter than your average night light — illuminating small-to-medium-sized clubhouses. Vibrant Colors! The Ice Cube Ice...

This article lists the relationship between Four and X. Despite their conflicts, the majority of which were caused by Four, they are best friends in the series. In "X Finds Out His Value", Four seems to be caring for X, as he helps him find his value, which happens to be 7. In Battle for BFB...