You will never meet a happier bunch of mutated, sewer-dwelling turtle creatures.

Yes, the Teenage Mutant Ninja Turtles -- and their master -- are the result of extraordinary mutations.

However, these "mutations" led to friendly man-sized turtles donning color-coded masks and cautiously surveying humanity from a manhole.

And when they're not practicing Ninjutsu on skateboards or sharing 75 double-cheese pizzas, the Turtles are purging the Foot Clan from coffee shops and ramming Krang with a shell-protected van.

If you're a fan of chemically induced evolution resulting in incredibly helpful turtle people (with a penchant for martial arts), might I suggest the TMNT Group Wave Women's Racerback Tank Top?

This heather-purple Teenage Mutant Ninja Turtles tank top for women features a colorful, incredibly positive, life-affirming illustration of the Turtles offering a welcoming wave.

Above the Turtles, their classic logo outlined in a subtle black.

Behind the turtles, equally bright stripes!

Racerback! Yes, it's a trendy racerback back!

Heather-purple?

The marbling or "heather" effect is expressed through the blending of lighter and darker materials -- in this case, the blending of 50% polyester, 25% cotton, and 25% rayon.