Kermit the Frog: 

Brain - The calm, rational leader of the Muppets, responsible for managing the chaos and keeping the show running smoothly.

Big Bird:

Heart - A kind, empathetic character who pumps warmth and love into the community of Sesame Street.

Grover:

Lungs - Our lovable, blue, and hyperactive friend keeps us breathing easy, just like a superhero taking flight on a fresh gust of air.

Cookie Monster:

Stomach - A lovable character with an insatiable appetite, who can't resist devouring cookies and other treats.

Bert & Ernie:

Kidneys - Just like this inseparable duo, kidneys always come in pairs, working together in perfect harmony to filter out the "bickering" between waste and useful substances in your body.

Animal:

Adrenals - An energetic, wild drummer who is always pumped up and fueled by excitement.

Sam the Eagle:

Liver - A serious, responsible character who keeps the Muppets in check and removes anything deemed inappropriate or un-American.

Fozzie Bear:

Bladder - Always ready with a joke and happy to relieve the pressure! Wocka Wocka!

Oscar the Grouch:

Spleen - A grumpy, often misunderstood organ responsible for recycling old blood cells, much like Oscar's passion for sorting and repurposing trash in his can.

Slimey the Worm:

Colon - A tiny yet essential character, diligently working behind the scenes to process and break down waste.

The Swedish Chef:

Mitochondria - The energetic, creative force behind the Muppets' culinary endeavors, supplying the energy needed for their performances.