Eh, it could be worse. I mean, yeah, Lothar is definitely a stereotype in a number of ways, but to my way of looking at things, he's not particularly offensive. I mean, he IS a hero, and fights alongside the main good guy, and holds his own in a fight - he's not just comic relief; he pulls his weight. To my mind, stereotypes start becoming offensive when it's obvious that the stereotyped character in question is only there to be made fun of/reviled, and plays always no part in the actual story. 'Look! It's a negro! Look at his cowardly antics, ho ho! Hey, do a trick, dark-skinned person!' THAT would be offensive, and unfortunately, there were far too many examples of that back in the day (and arguably still are, in Hollywood at least). A guy who has a bit of trouble with the English language and gets a little spooked by spooky stuff at times is pretty mild by comparison.