Vexis

The vexis was a serpent native to the desert world Pasaana. The species burrowed under the sand of Pasaana, and oils excreted from its skin hardened the sand it passed through to form an ever-expanding network of tunnels.

The signet of the Mandalorian House Kast was a coiled vexis. At some point during the New Republic Era, Neo-Imperial warlord Commander Janu Coin had the head of a vexis mounted on a wall in his estate on Shakari.

At some point, the scavenger Rey learned from a trader on Jakku about the serpent, that dwelled on Pasaana's desert. According to the trader, the vexis was relatively peaceful unless provoked.

In 35 ABY, after sinking into the underground tunnel system through the Shifting Mires, Rey, now a Jedi Padawan, and her Resistance companions Finn, Poe Dameron, C-3PO and BB-8 encountered a vexis during their search for the Bestoon Legacy. At first fearing there was no way out of the tunnels and that the creature was hostile, Rey realized it was injured and use the Force to calm it and heal its wounds. Once restored to health, the creature slithered away and, in the process, revealed a previously hidden opening to the surface.

Text and facts from the “Vexis” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.