In conclusion…

… any of the characters mentioned on this list have a comedic potential, which could lighten up the tone of the DCEU. However, the thing is that no new characters should be introduced into this shared universe other than the ones already announced.

The biggest problem isn’t that the movies aren’t funny – the problem is that they don’t appear to be any fun. And this shows that there is a problem with how the entire DCEU was (apparently) outlined. Batman can bring some laughs, or at least some smiles, even if he is one helluva brooding character. A director (and a writer) should know, however, how to make that happen.

Basically, and as a conclusion, any character has a comedic potential – however, not all directors can bring it to the surface.