Barash Silvain was a Kage female born on the planet Quarzite. At some point in her life she joined the Jedi Order. Around 407 BBY, when Silvain was a Jedi youngling at the Jedi Temple on Coruscant, she and a group of fellow younglings were introduced to training lightsabers. Silvain did not try to make friends with her peers on her own as she felt that she did not need any. Though that same day, she met Porter Engle who convinced her to at least try having him as friend. Subsequently the two developed a close bond, even coming to see each other as siblings eventually. The two worked together in unison complementing each others strength and weaknesses. Silvain was particularly talented in finding other minds' intentions while Engle was a talented and renowned lightsaber duelist.
A young Barash Silvain
Around , the Jedi Masters at the temple grew weary of their ever growing attachment to each other separating them as a consequence. The duo however pledged to willingly perform worse whilst being separated as they felt it would only be reasonable that they work together. This plan ultimately worked as they were reunited around 397 BBY in the Jedi Temple. It was when they were reunited that the Kage revealed to Engle that she was admitted to the Jedi Order at a slightly older age than usual and additionally that her species' memories started almost from birth which meant that she could still remember her family. Although she did not regret being separated from her family, she did feel like she lost something which subsequently prompted her to ask Engle to be her brother. From this point on the duo would refer to each other as brother and sister respectively.
Barash Silvain first appeared in the 2022 comics Star Wars: The High Republic — The Blade, written by Charles Soule for the Star Wars: The High Republic multimedia project. A concept illustration of her was revealed on October 14, 2022, ahead of its publication in The Art of Star Wars: The High Republic (Phase One).