This unit is taken from Dragon Ball AF, a fan manga drawn a long time ago by Toyble/Toyotaro (Artist of Dragon Ball Super). They should be on the Crossover Category. : r/DBZDokkanBattle
Super Dragonball AF [Fan Comic] [Young Jijii] - Album on Imgur
How a Super Saiyan 5 fan-art hoax transformed the Dragon Ball franchise - Polygon
Fan Manga] DBAF - Volume 18 (translation request) • Kanzenshuu
Before we had Super we had Dragonball AF, a look back at a time where DBZ fans had to take what they could get lol. : r/dbz
Fan Manga Review: Dragon Ball After the Future (Youngjiji) | DragonBallZ Amino
DBAF Screen capture by MalikStudios | Dragon Ball AF / Dragon Ball Hoshi | Know Your Meme