The Hulk Must Die

Bruce creates an indestructible robot which is able to withstand the power of a nuclear blast but the stress of completing it on schedule causes him to transform into the Hulk and he leaves this massive weapon of awesome power unattended. A foreign spy who has been hanging around jumps into the robot and takes off. The Hulk tries to stop the robot but can't and once he is worn out from the battle, he transforms back into Banner. Found lying in the desert by Ross and Betty, Bruce vows to build a bigger and better robot to take down the first one.