Stargate Universe's Beast
SGU x Beauty and the Beast (2012)
Vincent is part of the SGU crew, getting smuggled in as the senator's protective detail by Kathrine's dad after killing every other Beast in season 2. His memory loss is more extensive, he doesn't remember anything other than his memories up until he enrolled in the military and Kathrine doesn't find him while he's completing his missions.
I chose this point in the show so there is no romantic conflict and because he has very good control during this part of the story.
Pairing not decided: Vincent x Chloe or Vincent x Vanessa James or Vincent x Dr. Lisa Park