Unfortunately, the marvel universe IP isn't one you have the right to use, so your game has been disqualified from the jam.
It's still technically in the jam, but it won't be ranked with the other games.
If you want to avoid any IP infringement going forward, I suggest that you re-color/modify your assets and designs enough so they don't resemble marvel characters, and change the name/symbols in your game to not be so clearly about the marvel IP.
__________
You made a neat game for the jam, and I know you thought you were alright if you made the assets yourself, but the "legal right" to use something is often a complicated mix of copyright, trademark, and IP rights. Sorry.