When the episodes first aired, the Summit Media Group logo that appeared at the end of the credits was against a plain, off-white background. The repeats that aired some years later used a more elaborate, blue-background logo. When released on DVD, they went back to using the original off-white background logo.
In the first season, an instrumental version of the title theme music played over the end credits. In the second season, generic modern rock songs (which have no connection to the show whatsoever) played over the credits. These second season songs were later released on a soundtrack CD (even though the songs had nothing to do with Mega Man apart from being played over the show's credits.)