I'm thinking like Toph from The Last Airbender but her tier might be around the high mid level despite her normal fleshy body if you can get past her earth bending. Someone of her power could throw the tank onto it's top with a strike of the earth rather than just immobilize it (which can be done by someone weaker) and hide inside the earth while doing it. 

It depends on how quickly you can alter the earth if you can easily trap it.