While Ludwig was scary and more than likely some kind of insane psycho, he was the only doctor the team had. Which meant any check ups the mercenaries got would be done by him.

"Your turn, mein freund!"

He called, snapping you out of your thoughts and making you force yourself to enter his medical room. It was scary everytime, especially since last time Ludwig accidentally sewed his pet dove Archmedes into Scout's chest. Yeah, you don't know how he did that.