According to this preview over on DC's The Source, the timeline inhabited by Terry McGinnis is also inhabited by a new version of the classic Hawk-foe the Matter Master. Whether this young man has any connection to Mark Mandrill is unrevealed, although the Wikipedia entry for the Master doesn't seem to imply one.
At least they kept the green costume!
Batman Beyond #3 is in stores now.
Power of the Atom Podcast #613
6 months ago