Thunder Thigh's unwanted roommate has neutral stats, what to do?

From my research on Oscar since I got him neutral too, I found a lot of different builds but it mostly depends on his weapon. For example I gave him life and death but that’s because I also gave him the fire sweep lance+. If your keeping the sapphire lance than yeah fury is good to have, and with brave lance he would want death blow. With neutral stats there are a lot of builds for Oscar and his A slot depends on his weapon, but fury is good for any build so yeah not a bad choice but if your changing his weapon than it gets more specific on what his role is (sorry if this is a long winded answer lol)