Patrick StewartPatrick Stewart was 54 in Star Trek: The Next Generation - Descent as 'Captain Jean-Luc Picard'.
Jonathan FrakesJonathan Frakes was 42 in Star Trek: The Next Generation - Descent as 'William Riker'.
LeVar BurtonLeVar Burton was 38 in Star Trek: The Next Generation - Descent as 'Geordi La Forge'.
Michael DornMichael Dorn was 42 in Star Trek: The Next Generation - Descent as 'Worf'.
Gates McFaddenGates McFadden was 46 in Star Trek: The Next Generation - Descent as 'Beverly Crusher'.
Marina SirtisMarina Sirtis was 40 in Star Trek: The Next Generation - Descent as 'Deanna Troi'.
Brent SpinerBrent Spiner was 46 in Star Trek: The Next Generation - Descent as 'Data / Lore'.
John NevilleJohn Neville was 69 in Star Trek: The Next Generation - Descent as 'Isaac Newton'.
Jim NortonJim Norton was 57 in Star Trek: The Next Generation - Descent as 'Albert Einstein'.
Natalija NogulichNatalija Nogulich was 44 in Star Trek: The Next Generation - Descent as 'Adm. Alynna Nechayev'.
Brian CousinsBrian Cousins was 35 in Star Trek: The Next Generation - Descent as 'Crosis'.
Stephen HawkingStephen Hawking was 53 in Star Trek: The Next Generation - Descent as 'Self'.
Richard Gilbert-HillRichard Gilbert-Hill was >> in Star Trek: The Next Generation - Descent as 'Bosus'.
Stephen James CarverStephen James Carver was >> in Star Trek: The Next Generation - Descent as 'Tayar'.
Jonathan Del ArcoJonathan Del Arco was 29 in Star Trek: The Next Generation - Descent as 'Hugh'.
Alex DatcherAlex Datcher was 32 in Star Trek: The Next Generation - Descent as 'Ens. Taitt'.
James HoranJames Horan was 40 in Star Trek: The Next Generation - Descent as 'Lt. Barnaby'.
Benito MartinezBenito Martinez was 23 in Star Trek: The Next Generation - Descent as 'Salazar'.
Michael Reilly BurkeMichael Reilly Burke was 30 in Star Trek: The Next Generation - Descent as 'Goval'.Alexander SingerAlexander Singer was 67 in Star Trek: The Next Generation - Descent as 'Director'
René EchevarriaRené Echevarria was >> in Star Trek: The Next Generation - Descent as 'Writer'Jeri TaylorJeri Taylor was 56 in Star Trek: The Next Generation - Descent as 'Story, Executive Producer'
Rick BermanRick Berman was 49 in Star Trek: The Next Generation - Descent as 'Executive Producer'
Michael PillerMichael Piller was 46 in Star Trek: The Next Generation - Descent as 'Executive Producer'Jay ChattawayJay Chattaway was >> in Star Trek: The Next Generation - Descent as 'Music'
Jonathan WestJonathan West was >> in Star Trek: The Next Generation - Descent as 'Cinematography'
Ronald D. MooreRonald D. Moore was 30 in Star Trek: The Next Generation - Descent as 'Teleplay'
Gene RoddenberryGene Roddenberry would have been no older than 70 in Star Trek: The Next Generation - Descent as 'Creator'