- as Ensign Beckett Mariner (Voice)
- as Lt. O'Connor (Voice)
- as Ensign Brad Boimler (Voice)
- as ... (Voice)
- as Ensign D'Vana Tendi (Voice)
- as Durango (Voice)
- as Ensign Samanthan Rutherford (Voice)
- as Lieutenant Commander Andy Billups (Voice)
- as Captain Carol Freeman (Voice)
- as U.S.S. Merced Science Officer (Voice)
- as Commander Jack Ransom (Voice)
- as U.S.S. Cerritos Computer (Voice)
- as Lieutenant Shaxs (Voice)
- as Dr. T'Ana (Voice)
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Watch "Star Trek: Lower Decks > Moist Vessel":