that would require a bit of fantasy knowledge , and not everyone is into sci-fi or adventure genre.
All it requires is the internet and a search engine. It's quite trivial to do in most cases.
Personal favorites, by game:
Millennium War Aigis (RIP): Liana
Girls Kingdom (RIP): Iris
Dragon Tactics: Memories (RIP): Diske
Brave Girl Ravens xR (RIP): Francette
...Most of the games I play on Nutaku end up getting taken down. Hmm.