"X Finds Out His Value" (abbreviated XFOHV) is an animation made by jacknjellify. The video includes the algebralians Four and X, who would later become hosts in BFB. It was released on December 31, 2008, an entire year before BFDI. Cary Huang made this as his first "serious" animation, intended for his pre-algebra class.

4 天之前 · Algebralians, sentient beings resembling mathematical symbols, originate from the Equation Playground. They've appeared in 'X Finds Out His Value' (XFOHV), 'The Number Playground Chronicle!', and 'Battle for BFB'. However, their XFOHV and pre-BFDI comic appearances are non-canon.

Watch X find out his value, with the help of Four!Written and animated by Cary Huang for a school project for Pre-Algebra class (age 11)Edited by Michael Huang

One is an Algebralian and the main antagonist on Battle for Dream Island: The Power of Two. She made her first canon appearance in the stinger of "Outbreak At Stake" where she emerges from the damaged Moon. Prior to that, she first debuted in "X Finds Out His Value" and was shown as a recommended character in "The Tweested Temple".

XFOHV is the most viewed non-BFDI jacknjellify video as of July 2020, the only non-BFDI video out of the channel's Top 50 most viewed videos, and the channel's most viewed video from its first year, 2008.

Sprunki Numbers XFOHV Mod brings a mathematical twist to the Sprunki universe, blending rhythmic creativity with numerical patterns in an innovative and uniq...

The Sprunki Numbers XFOHV Mod introduces a fascinating mathematical twist to the beloved Sprunki universe, merging rhythmic creativity with numerical patterns in a truly unique gameplay experience. This mod is renowned for its innovative approach, blending logic with music-making through number-themed characters and soundscapes.

Sprunki Numbers XFOHV Mod is an engaging and innovative modification to the renowned Incredibox Sprunki reality. The Sprunki Numbers XFOHV mod portrays characters and environment in a surreal, abstract design. It beautifully merges energetic colors, unique forms, and creative soundscapes.

Number Playground Chronicle Extended!

Three appeared in Battle for Dream Island for the first time as 2 recommended characters (recommended twice) in "Uprooting Everything", and once again in "B.F.B. = Back From Beginning", and thus was the last XFOHV character to appear in the BFDI universe.