How many times were you put off by Otacon's annoying calls that did little to help you in the middle of a level? You just barely got out alive and Otacon is calling you to give you a tidbit on the mission that is irreverent. Who does he think he is?
I actually respect Otacon and think he is a great character whose love for Anime makes him three dimensional. I don't know why I find that aspect the most important (I am not that crazy about Anime); maybe it makes him more human in my eyes...
Otacon does get on my nerves (or did, haven't played MGS in a few years) at least a few times while playing. ExitSixTwo took that annoyance with Otacon and made a little video about it that is pretty humorous.
Can you recall any particular situation where Otacon annoyed you?