Amazon Studios has ordered two seasons of “The Hospital,” a new sci-fi animated comedy created by Cirocco Dunlap (“Russian Doll,” “Big Mouth,” and “Miracle Workers”).

Dunlap is reteaming with “Russian Doll” star Natasha Lyonne, who is executive producing and voice acting in the series.

The series follows, “Sleech and Klak—aliens, best friends, and intergalactically renowned surgeons—as they tackle anxiety-eating parasites, illegal time loops, and deep-space STIs. Risking their careers to take on a remarkable case, they put existence itself in jeopardy. Although considering their dismal personal lives, oblivion might be an improvement.”

Along with Lyonne, Maya Rudolph and Danielle Renfrew Behrens of Animal Pictures will also executive produce.

Nope‘s Keke Palmer, Greta Lee, Kieran Culkin, Sam Smith, Rudolph and Lyonne will voice aliens in the series with more voice cast to be announced.

The character rundown so far includes:

Keke Palmer (Alice, Hustlers) will voice-star as Dr. Klak, a brilliant, multi-eyed surgeon who spends her down time feeding her sentient plants, obsessively reviewing past failures, and watching hit show My Lover, My Clone with her best friend Dr. Sleech.

Greta Lee (Past Lives, The Morning Show) will voice-star as Dr. Sleech, a reckless, cocky surgeon whose main saving graces are her genius, her well-oiled lizard tail, and her unconditional love for her best friend Dr. Klak.

Natasha Lyonne (Russian Doll, DC League of Super-Pets) will voice-star as Nurse Tup, a playful nihilist with chameleon flesh who thrives in the chaos of the Hospital. Nurse Tup expertly navigates every accidental apocalypse created by renegade doctors Sleech and Klak, and looks good doing it.

Maya Rudolph (Saturday Night Live, Big Mouth) will voice-star as Dr. Vlam, a robot intern who has been alive for at least 20,000 years. She’s had every career you can think of—king, thief, stay-at-home mom of 500—and is a true testament to hard work. All you need to succeed is roughly 850 years of free time.

Kieran Culkin (Succession) will voice-star as Dr. Plowp, a surgeon, an empath, and an adult experiencing puberty. He has a love-hate relationship with Sleech, constantly feels everyone’s feelings, and has four identical brothers with whom he shared an egg.

Sam Smith (Singer/songwriter – Spectre, Pitch Perfect 2) will voice-star as Dr. Azel, a galactically-renowned surgeon with ambiguous morals and six well-manicured feet.

“The Hospital” will premiere exclusively on Prime Video, release date TBD.