Hi, I’m fairly new to the game (~40 days old) and would appreciate any suggestions on putting together a team for arena! I’ve attached a link for photos of the characters I have available.
Thanks in advance for any help 
The important thing to think about in team building, I reckon, is synergy. For example, I see Baymax is among your strongest Tanks. Baymax can study enemies and create shields, and since study works specifically on Normal damage, you should ideally team him up with damage characters focused on Normal damage (Like Merida or Darkwing Duck). Just think about what your strongest characters can do and which teammates would benefit most from that (or vice-versa)
Cool thanks, I’ll try that!