Long before Bryan Cranston was Walter White on "Breaking Bad," he played one creepy creature!

On Monday, Bryan sat down with Jay Leno on "The Tonight Show," where Leno surprised him with some of Cranston's very first acting work.

While Bryan said he's never been embarrassed by any role he's ever taken, he may have forgotten about this gig on "Mighty Morphin Power Rangers" back in 1993.

Check out the clip above to see the vintage footage ... and Cranston's awesome payback!

This isn't the first time Jay has snuck in some forgotten footage featuring the "Breaking Bad" stars -- click here to see Aaron Paul's hilarious "Beverly Hills, 90210" cameo!