The Kryptonian Saiyans (Marvel x DC)

Two brothers, born from a Kryptonian mother and a Saiyan father, were sent to two different Earths upon being born, thus being adopted by two separate families. Benjamin Parker, the Saiyan adopted by May and Ben Parker, was raised alongside his cousin, Peter Parker, both learning what comes with having great power. Mark Kent, the Saiyan adopted by Jonathan and Martha Kent, was raised alongside his much older brother, Clark Kent, both wanting to fight for their people. However, one of these long-lost twins slowly finds himself descending into madness, while the other is unknowingly the only person in the multiverse who could stop him...