It's essentially a distraction tactic at this point. There was no way that Harold was going to be able to hide his involvement, so just say his name so often nobody bothers to remember that he had backup.
MC
-words: devilish
-actions: saintly mc: teleports behind them "nothing personal, kid" mc to enemy: pft skill issues ah yes introducing yourself. a very knightly way
Damn Harold got some serious roasting 🔥
It could be the isekaied persona just going on his usual "y u kill?!!", but having that thought interpreted with the in-world Harold is just chefkiss.