...offered the role of Robin

https://www.metv.com/stories/originally-burt-ward-was-only-looking-to-be-an-extra-on-batman-before-he-was-offered-the-role-of-robin

Here's how the Boy Wonder was given a wonderful opportunity.

Julie Newmar said that many actors took a pay cut to appear in an episode of Batman (https://www.metv.com/stories/julie-newmar-said-that-many-actors-took-a-pay-cut-to-appear-in-an-episode-of-batman)

According to Newmar, Batman was "in."