After re-reading the flavor, DT's character does not sit well with me.
"The clock is ticking and your mentors aren't growing any younger."
How would Spiderman be Mary-Jane's have a mentor? The roles so far have related to being sidekicks so far.
"Some of them, but not all, knew who was on the other side of that transmission."
This does work with this being a mixed game between DC and Marvel, as the DC characters would be aware that it was the Riddler. This does not however imply that characters may NOT be superheros however do to the Mentors text.
HoS DarkThantos