Things that annoy you in translations

When the translation deliberately changes what the characters are really saying to interject the translator's personal opinion or change the story almost entirely.Also when a line does not make sense when translated. In which case it should be changed then to make sense.

Bad translation rarely used to be a problem for me, there were only a few games that I've played that were translated poorly. I think the main issue here is that some things are impossible to translate correctly, stuff like puns, idioms, or if a certain word doesn't have an analogue in the other language.
However, there's one case in particular that has to be mentioned: the official translation of Harry Potter books/films to my native Russian language simply sucks, because the translator thought it's a good idea to change (read: butcher) some characters' names. That's so dumb.

My main pet peeve, however, is the dubbing. An overwhelming majority of games translated to Russian have much inferior dubbing and there are a lof of games where dubbing really sucks. When I replayed later those games in English, it was like playing them for the first time and I've never returned to the localized versions. I've got to say, it's not as bad with films, though.
Nowadays when I play/watch/read something it's always fully in the original English language, how it's meant to be played/watched/read (unless it's anime, in which case I choose Japanese sound track with English subs).

I hate whenever a translation is too literal or slavish to the original script. A lot of the time this leads to bad prose or awkward phrasing. Leaves me like Orsen Wells ranting about frozen peas.