DC knowledge isn't a requirement. I mean, I have a basic understanding of DC, but I didn't know about the Legion of Superheroes until I joined.

The game itself is meant to be small, and has a set run time. I think about two years is the expected run time, and the whole Chronoblivion thing didn't get revealed in game until a few months ago. Current cast members include Gohan and Videl living up their Great Saiyaman personas, and Future Trunks being completely unsure about them.

But yes, work permitting, it would be amazing for Gohan to have his dad around. c: