DBXV - Luffa VS Bergamo

Luffa in a match against Bergamo "the Crusher", the eldest brother of the Trio de Dangers lemme know if you want me to do them too).

Bergamo is the considered to be the strongest warrior in the 9th Universe, hence why he and his brothers were chosen to be the representatives of the 9th Universe for the Tournament of Power. He has the ability to absorb the power of enemy attacks inflicted on his body, which increases his own power and causes his body to grow larger. The more powerful and numerous the attacks, the bigger and stronger he becomes, although he does seem to have a limit to the power of the attacks he can absorb and the power he gains seems to only be temporary. Until it's given an official name (if ever), I'm going to call this ability "Attack Absorption Gigantification" (攻撃吸収巨大化 Kōgeki Kyūshū Kyodai-ka).
Also, his (and his brothers) ki cannot be sensed, although he can still use ki manipulation techniques, like his Wolfgang Penetrator (ウルフガングペネトレーター Urufugangu Penetorētā), which is just an orange(ish)-coloured beam-shaped energy wave fired from the palm of his hand.
It hasn't really been explained as to how/why he has these characteristics (the same goes for his brothers, particularly "Poisonous" Lavenda), such as a mutation or some kind of body modification or even something magical/supernatural.

Here in his match against Luffa, he's demonstrating his Crushing Grip (握り潰し Nigiri Tsubushi), a strength-based technique that involves crushing his relatively small opponent's bones in his hands with his powerful grip.

Dragon Ball Xenoverse (c) Akira Toriyama, Namco Bandai