A non main character can be considered a non-canon, a side kick, a supporting character, or in terms of actors supporting actor/actress.
its called a minor character
There is no singular main character. Yakko, Wakko & Dot are considered the main characters.
Secondary or minor characters.
Secondary or minor characters.
antagonist
The protagonist is often the main character, but not always. The protagonist is the "hero" of the novel.
John Wilson is typically considered a main character, as he plays a significant role in the story and his actions and decisions drive the narrative forward.
There r many, I'd say general James longstreet was the main 1, but any general mentioned in that book who has a chapter on its point of view can be considered as a main character
nature :)
Nature
Bielke is considered a supporting or chorus role, along with her sister Shprintze.
The main characters in the book Someone Like You areHalley CookeScarlett Thomasand Macon Faulkner can be considered a main character.