Relient K
"I'm Lion-O"

Chillin' at the lair.
Snarf, me, and the twins.
My favorite feline is the one who wore cheetah skins.
Fighting evil, we drink milk, and we purr a lot.
Ask me to cross them, and I would say I'd rather not.
I'd rather not!
Thundercats Hoooooo!
Thundercats Hoooooo!
I'm Lion-O! I'm Lion-O!
I'm Lion-O! I'm Lion-O!

Thundercats Hoooooo!
Thundercats Hoooooo!
I'm Lion-O! I'm Lion-O!

Sword of Omens, come to me.
Your eye opens so you can see.
Fly from the sheath into my paw.
I am the greatest Thundercat of them all…

I'm Lion-O, I'm Lion-O!
I'm Lion-O, I'm Lion-O!
I'm Lion-O, I'm Lion-O!
I'm Lion-O, I'm Lion-O!