How Shredder got his face scarred?

[Shark_Blade]

I don't think it was ever explained in the Nick toons.

Was it by Hamato Yoshi?

I thought it was explained in the Turtle Temper episode, during Splinter's flashback of his burning house. But Shredder's face was fine back then.

Thoughts?

[The Stryker]

The fire?

Duh?

[ToTheNines]

It happened in the fire. Watch the flash back in Rise of the Turtles part 2.