Looking for a F!lyon build,i have him both +def and +res iv.I aim for tanky build
Replace his A skill with a T4 stance (for the guard; bracing is good, so is mirror, sturdy, basically anything without speed) and place QR in his seal. You’re pretty much done then. Depending on how much fodder you have around you can upgrade his C, but it doesn’t matter too much. Special can be damage or heal, I usually run Sol.
Sol with Quick Riposte or Mystic Boost is what you want for tanking multiple enemies.
Triangle Adept with Glimmer to kill pesky blues and colorless if you want to use him in Arena Assault.
Those are the cheap builds. As for IVs, both are player preference. Whichever defense you value the most.