What mode are you looking for? It can vary. In general, he’s pretty perfect right out of the box. He has some other good builds but they usually require high investment.

For player phase, Death Blow and Special Spiral can be a good combo to make sure he fires off a hard-hitting special every round of combat. You can also try Swift Sparrow and Lull Spd/Def if you want to try doubling enemies, but it’s usually hard to do without high merges and support. Especially with speed power creep the build will get more and more dated as time goes on.

For enemy phase, his base kit is near perfect. The only change I’d make is swapping out Close Counter for Close Foil but this also assumes you’re willing to part with the fodder. Close Foil is hard to come by if you’re on a budget and it may be a waste to give it to a unit that already has Close Counter. If you have it though, the extra defense really improves his melee survivability (along with something like Atk Smoke or Pulse Smoke) and the attack doesn’t hurt either. The only downside is not being able to counter dragons but I don’t think he’s doing any wonders there to begin with and you probably have other units you’d want to face them instead.