For fun I just ran GoL with Mummy Dog and he still works. He is slow in the first phases but decent against DK. He is not as good as many other newer toons, but definitely still works.
Sadly as I killed the DK, after all that manual effort, the app crashed and I didn't get the reward or the credit. I was hoping to update the time for that team but I'm out of SoT for a while.