I totally agree with you Lenna. Thinking exercises the mind. I love thinking things, except Sudoku's. I hate them. Though I'm amazing with crosswords and codewords
Suck at cryptic crosswords though....
Anyhoo! Not Malaris? Here's another thought by me.

I'm a master at arms
So I was right with the lots of arms.

I'm as smart as can be
I'm still thinking that this could mean clothing, or the way the answer talks or acts.

Though I have no good looks,
Literally? So this line implies the answer is uuuuuugly.

You can sure fight with me.
Once again. Dunno whether it's with or against. I'll go with against, because there's a higher chance it IS against.