Answer: His name is Matthew Del Bel Belluz.  There isn’t much info about him online except for he’s been in a couple of theatre shows.  There was also something about him winning a musical theatre scholarship, so he’s obviously got some talent. 

So far he’s only appeared in three Degrassi episodes as Reese: he flirted with Clare in “Jane Says Pt 2,” he was KC’s rival on the basketball team in “Touch of Grey” and he was hanging out at the ravine in “Heart of Glass.”  Whether or not we’ll see him return in Season 9 is TBD…