Any aggressive/interactive fish for a 150 gallon aquarium?

[GouramiGuy123]

I was thinking about moving my giant gourami, African bush fish and sun catfish into my 400 gallon from my 150 gallon. I was thinking about what to put in it because it’s in a really nice spot and I was thinking along the lines of either a really aggressive solo fish or a really interactive fish like a wolf fish. I also really like characins so if you guys have any suggestions/ recommendations please let me know!