If you want to play in the tournaments, sadly this is not the case; you hit the paywall immediately. Your level 25 1-star characters are going to get whomped by 2- or 3-star teams (generally speaking, luck and particulars notwithstanding). As an aside, has anyone ever had a Storm-off? That's when Storm (Classic) characters on opposing teams chain-whomp each other with Elemental Barrier procs: your elemental barrier hits their entire team, proccing their elemental barrier, which hits your entire team, proccing your elemental barrier, etc. Happened to me yesterday; was kind of hilarious. Thankfully mine hit first, or I would have lost; it KOed everybody but my Iron Man, who survived with like 13 health.