Looking for a series... (Is this the one?)

Hello,

I remember a series of either Superman or Superboy, of which there is only one scene I have on my mind. At first I thought it was "The Adventures Lois & Clark", but turns out it was just another Superman series I used to watch back in the day.

Now, the scene I remember of this other Superman/boy series goes something like this:

Superman/boy is fighting a robot lady that can shapeshift in some cave/room. She's also keeping Lois hostage. The robot beats Superman/boy in the end when she shapeshifts into Lois and the real Lois feels very sorrowful about this.

Please tell me this is the show I used to watch when I was a child!