- For other uses, see Ivan.
Ivan Vumelko was a male human living in the 23rd century. He was squat and paunchy with bulging eyes, and was known to be grouchy and sarcastic. (VAN novel: Reap the Whirlwind)
Early in his Starfleet career, he served aboard the USS Tamerlane as a gunner's mate. (VAN novel: Storming Heaven)
In 2265, Chief petty officer Vumelko was assigned to starbase Vanguard as a customs officer. (VAN novel: Harbinger)
Just prior to the Tholian attack on the station in late-2268, Chief Vumelko was trying to keep order in the docking bay during the mass evacuation of Vanguard. Although he was a noncombatant and therefore was supposed to leave the station himself aboard the transport Kenitra, he decided to stay aboard Vanguard and use his experience as a gunner's mate to fight the Tholians. (VAN novel: Storming Heaven)
- It is unknown if Vumelko made it off Vanguard before the station was destroyed.
| Starbase 47-Vanguard personnel | ||||||||||||||||||||||||||||||||||||||||||||||
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| Ballard • Beyer • Braun • Briv • Cannella • Charles • Collig • Cooper • Desai • Dunbar • Farber • Finneran • Fisher • jav Gek • Gianetti • Goldrosen • Greenfield • Heffron • Hetzlein • Hofstadter • Holmgren • Humberg • Jackson • Kiraar • Knight • Koothrappali • Langlois • Lenger • Liverakos • Malhotra • Marcus • M'Benga • Medeira • Meeker • Miller • Moyer • Mugavero • ch'Nayla • Nogura • Pimental • Reyes • Robles • Seklir • Shepherd • th'Shoras • Sohl • Sozlok • Strout • Tamishiro • Tarcoh • Tescar • Thelex • T'Prynn • Vumelko • Wallingford • Wolowitz • Xiong • unnamed Vanguard personnel |   
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