Teenage Mutant Ninja Turtles, Season 2

[Leo and Raph keep beating the Shredder, causing multiple hits that damages his armor]

Donatello:
Guys, use your weapons to penetrate his armor! [kicks a panel open from the transmat] I think we can stop him for good!

[Leo, Raph, Splinter and Mikey all stick their weapons into the Shredder]

Shredder:
You pathetic creatures cannot hurt me!

Donatello:
Don't be so sure!

[Don connects two exposed wires from the transmat, sending a massive electric arc to the Shredder, as all the weapons stuck in him act like lightning rods. The electricity shocks him severely and he slumps to the ground. As the Turtles and Splinter think they have defeated him for good, the armor opens from the chest, with two eyes lurking out, revealing the Shredder's true form.]

Donatello:
The Shredder's an Utrom?

Michelangelo:
AH! It's the prisoner dude, who... who...

Ch'Rell:
...Who escaped after causing Mortu's ship to crash to Earth a millenia ago!