Vonkhel

"Jedi Master Vonkhel managed to befriend the Sith Lord of Gairm.""

- Antron Bach tries to reassure himself about approaching a downed starfighter

Vonkhel was a Jedi Master who befriended the Sith Lord of Gairm.

Behind the scenes
Vonkhel was first mentioned in "The End of History", a short story written by Alexander Freed and published in Star Wars Insider 154 in 2014. The character's name, species and gender were not revealed in the story.