They would be the best besties, and Onslaught would get pulled into some of the brotherly shenanigans with Backlash and Blitz too. You could maybe work out something where Onslaught started out on Alpha, but ultimately had to be transferred to Juliet because he was too wild on the field or something like that, if you want the best of both worlds? Backlash would still be buddies with him after he transferred!