What is this simplified/less-detailed art style called? So, recently, while watching a few of my favorite animes, I noticed this really weird art style that pops up whenever a character will show confusion, annoyance, etc.

Don't really know what the art style is called. Usually, they look kinda simplified or less detailed (not sure if that's the right term). I don't think it's chibi, but whatever it is, I would like to know.
It's called &quot;super deformed&quot;, or SD.
Some anime spin-offs of franchises in that style have the &quot;Super Deformed&quot; or &quot;SD&quot; in the name, like &quot;Kidou Senshi SD Gundam&quot; or &quot;Kamen Rider SD&quot; others don't, like &quot;The Ten Little Gall Force&quot;.