There seems to be a misunderstanding here, these guys aren't comically evil. There's no comedy here.
Nazis are not comically evil, they're just evil. These guys are much the same.
Unless of course you find their overblown confidence to be funny.
Or that this is seemingly being set up like it's going to be a climactic fight but we, the readers, the author, the artist and the publishers, all know that it's going to end in an overwhelming win for Touka. The set up is too over the top almost to a comedic effect.
The actual arc is going to be centered around the destination. Not the roadside bandit side quest.
Though I must admit, the final guy would probably be a headache because of course the author won't just let the MC have it easy every time... so the final guy would avoid death like a cockroach and buzz around being annoying and disgusting.