After half a day as Primo, Hooper is once again Hooper, the name he was granted at the shelter. It just fits, we've decided. And, we can call him HooperSuperDuperPooper this way, which is like, excellent.
Besides, unlike most people, when I first heard his name I did not first think of lovable Mister Hooper from Sesame Street, I of course thought of the beer-swilling, bar-fighting rocket car-jumping stuntman Sonny Hooper, played by Burt Reynolds in the 1978 film by the same name. You probably didn't see it. That's OK, but I still recall the credits rolling to a song with the lyric "there ain't nothing like the life of a Hollywood stuntman". And Hooper the Dog definitely resembles a stuntman when he goes barreling down the stairs; a successful outcome usually seems unlikely.
So, yeah. Hooper. Hooper Primo King-Guglielmetti. Now all we have to do is train him to wear a cowboy hat, blow bubbles with gum, and drive a rocket car.