Vice Versa is a living weapon like Krieg (Parasoul’s umbrella). Peacock and Painwheel’s abilities are synthetic parasites - meaning they’re man-made and mechanical. so not living/sentient, while natural parasites (like Samson or Leviathan) are living & sentient
@Inked THANK YOU! I was having the brain cramp of the century over here! Yes that all makes sense so then it seems all the living parasites have names starting with S except for Levianthan.