I believe many people are under impression that generally the Japanimation consists of geeky, animated and enormous-eyed characters.

Well, that is perfectly true most of the time...

I believe many people are under the impression that generally Japanimation consists of geeky, animated, and enormous-eyed characters. (the last part of the sentence is technically correct when you used 'and' after the last colon but sounds weird)

Although I would like to introduce a of the few non-geeky animes'.

An American channel put this on the air, though I have no idea how they translated it...

The robot called Gedachitnis speaks very formally and sometimes goes linguistic jokes. (not sure what your trying to say here)

The voice actor is the same person who did the dub of my favourite character in Star Trek by the way...

Hmmm, I hope these help you improve your Japanese.

But I would like to introduce some of the few non-geeky animes. (although is like 'even though'; it concedes something, which would only make sense in the previous sentence: Although that is perfectly true most of the time, I'd like to... But just contrasts)

You can often see bloody scenes. (gory is good too)

The robot (called) Gedachitnis speaks very formally and sometimes makes linguistic jokes / his jokes sometimes use clever/witty wordplay.

The voice actor who plays him is the person who did the dub of my favourite Star Trek character by the way... (ナウンプラスナウンっすね）

The title is from the words Usagi (rabbit) and ...