Following the name of the champion(s): Indicates the number of times the competitor has held that title at that point.
[...]
Indicates a gap in the listing where title changes are not known.
<
Title was held or changed hands no later than this. In these cases, it is known that a competitor held the title at a certain time but not when he/she won it.
@
Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
#
Unofficial or disputable claims. These are usually matches that certainly took place, but where there is doubt that the competitor shown should be recognized as a true title holder. These listings are also italicized.
* Bolded letters in the competitor's name indicate the surname/family name.
Katō Ryūji
2014-07-25
Tōkyō
Defeats Seki Masataka to become the first REBELS 52.5kg champion.
Ogasawara Eisaku
2015-07-12
Tōkyō
Defeats Yūki to become the 2nd champion; vacates after winning ISKA World K-1 Rules Bantamweight Title on 17-09-06; renamed REBELS-BLACK title in 19-12; REBELS merged with KNOCK OUT in 21-03.
