I wasn’t a big fan of Alois in the game. He’s a knight for the Church of Seiros and he doesn’t do much in the game.
He does feel a lot of remorse when Jeralt is slain by the false Monica.
But I chose the Black Eagles route and sided with Edelgard. So eventually I had to face Alois in battle. He actually gave me the most trouble in the battle.
So I had no trouble sending him to the afterlife.