My 4 star characters are missing

WarMachineFan

I worked hard to build a good team. But last time I logged in, I was missing all of my top champions including venom pool and mephisto, both 4 star.

I don’t know what happened. Does anyone know what might have happened and how I can get them back?

Unknown

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Duke_Silver

A Friend of mine accidentally sold his 4* ambomination cause he left his phone on in his pocket lmao