Nice work, I like the climb! For the idle I'd say the hands are a little too high and float around abit too much. Watch out for the knees bending too much that it looks a little unnatural too. A boxing stance usually has more movement in the shoulders and the hands stay relatively close to the body (under the chin).
For a variety of idle inspiration check out some character selection screens in games like..
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For a variety of idle inspiration check out some character selection screens in games like..
https://www.youtube.com/watch?v=c8fMJUNg_z0
I polished a bit the idle so maybe it works better than before?