Cartoons include characters as actors

[Gumbo23]

Basically this

For example, with the looney tunes collections there’s no way I’ve seen to show cartoons by characters in them aka bugs bunny list

On regular shoes you can click on an actor and see their other shows

Would be a handy feature for cartoons too is all

Just a thought  :-)

[Swindiff]

Most metadata is scraped from places such as TVDB, IMDB, TMDB, etc. These sites hold metadata for actors, but not characters, which is what you are after. AFAIK there is nowhere to scrape that data from. Nothing to stop you from doing it manually, but that would take forever.

[Efficient_Good_5784]

The issue here is that Jellyfin only has a single set of actors for the whole server.

When it comes to something like this, you would need to decide if the actors should be based on the real-life actor, voice actor, or the cartoon/anime character.

If we go by cartoon characters, the cartoon character will be shown in all entries that the voice actor has a role in, which wouldn't make sense in non-cartoon stuff. Furthermore, a single voice actor can voice multiple cartoon characters.

Simply put, the current design for actors in Jellyfin is based for live-action content with real-life actors and voice actors.