The Kanji in the Japanese name of Yodan Shifour, 世 (On: se, sei/ Kun: yo), means world. 'Yodan' is derived from the Japanese for four phases, 四段 (yodan), which may be the origin of the Bakugan's Kanji. 'Shifour' is derived from the Japanese for four, 四 (shi), and its English. The derivations of both words refer to its ability to transform into four modes.
Yodan Shifour was once named 'Prediction' (予断/ヨダン,Yodan?) tentatively, which may be misinterpretation of Four Phases, 四段 (yodan).