Kermit? Poem by Ima Ryma

Those human creatures came around,
Got all excited about me,
Said a new frog species they'd found,
Had not looked hard apparently.
I am see through translucent green,
Living high in tree canopies.
I like to make the night life scene,
So hanging with humans - puhleeze!
My best feature are my swell eyes,
Bulging white eyeballs sticking out,
With black pupils of sexy size
That have that show biz look about.

'Muppet' the humans do term it.
And who in the heck is Kermit?