character type - I've said it before, I'll say it again: '[fill in the blank] but will not hesitate to stab'

most notably 'heart of gold, but will not hesitate to stab (see: Steve Rogers, Thor)
and also 'already pretty stabby, but will not hesitate to stab' (see: Din Djarin my OC Petit)

but secondary character type is 'thin veneer of deliberate cheerfulness over a deep well of 'what the fuck is that' (see Klaus Hargreeves & Charles Rowland)