There are any characters who don’t get credits for what all good they did. No matter what he/she up to. Sometimes they didn't get the spotlight.
For example character :
Armin Arlert
Spoiler: :
He has offered himself as a sacrifice more than once and killed a guy to save Jean. He nearly died sacrificing himself for Eren when he nearly got killed by Bertolt.He came up with a plan to get soldiers to HQ so they get the supplies they needed. Then once they got inside HQ he came up with a plan on how to kill the titans surrounding it and it actually worked.
Saitama
Spoiler: :
He continues to save the world, but he will continue to get no credit because “C-Class heroes can’t save the world by themselves” and “He let our city get destroyed” and “He finishes off opponents and takes the credit for other heroes”
What's your favorite characters and why? Do the credit's worth to them to deserved?