Chibi

Chibi (ちび, Chibi?) (pronounced with long E sounds) as an English word is slang used in some circles (for example otaku). It has its origins in the Japanese language. In the context of anime or manga, is used to describe a style of drawing a character in a highly stylized way, with stubby bodies that are about the same size as the head, much like super deformed style. A chibi rendition of a character is usually done for comedic purposes.

Eiichiro Oda draws the characters in his Side Comics in chibi-form. Also, Luffy, after using Gear 3, transforms into a chibi-like form for a while, until he changes back to normal size.