M'Rissey is the 13 year old business manager of the Legion of Super-Heroes. Originally he tried out for the Legion of Super-Heroes but was told by team leader Lightning Lad he didn't have the time to deal with him or the numerous other things he had to deal with.
M'Rissey taking Lightning Lad literally worked behind the scenes to arrange things to improve the Legion from ordering new costumes and optimizing duty rosters without the Legion knowing he was around. Eventually the team discovered him and made him their business manager. He later coerced the new U.P. President to pardon the team after they had become fugitives and he convinced her to grant the team diplomatic immunity.
M'Rissey was able to pay off many of the Legion's debts by selling the patent rights to the Legion's flight rings.
- Appearances of M'Rissey (Earth-Prime)
- Images featuring M'Rissey (Earth-Prime)
- Quotations by or about M'Rissey (Earth-Prime)
- Character Gallery: M'Rissey (Earth-Prime)