The mummy was Moonra!!! (SP?) , the show was awesoem but it was way too repetitive.
1.Thudnercats in base
2.Radar detects something
3.They go out
4.Fight those mutants that are allied with moonra / Fight the Lunacats
5. Moonra transforms and goes to atatck Thudnercats
6.The dude enlarges the sword and aimds the eye on moonra
7.monnra gets weak and goes abck to mummy and disapears while yelling "Ill get you thudnercats"