Skreek came to join the Warbird gang, a pirate gang led by Kragan Gorr. The gang secretly worked for the First Order in a campaign to force the refueling station Colossus to be given over to the latter organization.
Skreek (background) follows Kragan Gorr
In 34 ABY, Gorr sent the Neimoidian spy Hallion Nark to infiltrate the Colossus. After he gave the pirates the go-ahead for a "triple dark," Gorr devised an attack on the refueling station Colossus, with Skreek taking part. Under the cover of a storm, they sprung on the platform and engaged the defending squadron, Ace Squadron. During the attack, a disturbance in the comm channel caused Skreek and the other pirates to be put off. As they stalled, one pirate was shot down, and Gorr ordered the rest of them to retreat.
Sometime later, Synara San, one of the other pirates, managed to infiltrate the Colossus and contacted Gorr when Ace Squadron was vacant. Led by Gorr, Skreek and the other pirates attacked the platform a second time. Skreek flew in aboard a speeder bike alongside Gorr as he spotted the engineers Kazuda Xiono and Jarek Yeager attempting to install a targeting computer to activate the Colossus turbolasers. Gorr disembarked with Skreek and a Hassk pirate to stop them. While Yeager sent the Hassk falling to his doom, Gorr latched onto his hoverlift, and Skreek engaged Xiono. Yeager then rammed his hoverlift into Skreek, knocking him unconscious. When he woke up again, Yeager was still fighting Gorr on the hoverlift, and Xiono was climbing back up to the ledge after briefly falling off. Skreek confronted him, but he grabbed a spear and stunned him. Shortly after, Yeager was able to activate the targeting computer, and Gorr ordered a full retreat, saying that they had done enough damage to the platform.
Major Vonreg and his troops betray Skreek and the other pirates
Skeek was present when the First Order Commander Pyre hired Kragan to kidnap Torra Doza, the daughter of the Colossus captain Imanuel Doza in order to pressure the later into accepting First Order occupation. Gorr eventually sent the pirates Drell and Valik to kidnap Torra with the help of the unwilling Synara San.
When Drell and Valik returned to the Warbird gang's headquarters, the Galleon, with Torra as their captive, Skreek escorted them to meet with Major Elrik Vonreg of the First Order, who had requested her capture. As Vonreg arrived, he then double-crossed them and shot Drell. Skreek fired back, but was shot in the chest and fell overboard into the ocean.
Later onboard the Galleon, heard from Valik intercepted an encoded transmission sent from the Colossus, which she brought to Kragan. When she decoded the message, it turned out to be a transmission sent to the Resistance by Kazuda Xiono, calling for help.
Since they received the message, they fight the First Order until the Resurgent-class Star Destroyer Thunderer has arrived, as Kazuda ordered everyone to head back to the Colossus as to make a jump into hyperspace and it did as the pirates including Skreek cheers.
Kragan, Drell and Valik are laughing that Kazuda Xiono want to help them to salvage the Mandator IV-class Siege Dreadnought Fulminatrix to get the coaxium, as he tells Kaz they lackeys only take orders from one tyrant, Captain Kragan. As what Kaz said that Colossus can't jump into hyperspace, they agreed.
At Aunt Z's Tavern, it is unknown that the gravity generator has shut down by MB-13A, as Gork have been punch Skreek is laughing. When the gravity is back, Skreek has landed on the floor at the top of his back of his armor.
Skreek was holding a drink, and has been hit by Vusk as Gork won the wrestling. So Skreek fight him, until, the start of the salvaging the Mandator IV-class Siege Dreadnought Fulminatrix. As Skreek holds a couple of crates, he wonders about the coaxium, he tells Kaz that it's located at the hyperdrive chamber. As he carries more crates, Kragan tells everyone to head back to the Galleon.
Skreek was surprised about the people of Colossus, as Drell thinks that Doza's "got a real mess on his hands", Kragan said, "Which means an opportunity for us". Skreek with Kragan to Aunt Z's Tavern as Kragan tells Aunt Z that he and his crew will go on a hunt for jakoosk. At the ice moon Celsor 3, he and Snarl are on of skiffs. So Skreek use the thermal detonators to get the jakoosk out of its hiding, until the it came in attempt to take it down but it failed. After the jakoosk have been defeated by Kaz with the big laser cannon, Skreek and the others watching cooking the jakoosk meat.
Skreek wore stormtrooper armor over his torso area. He also had brown trousers and partial bandaging over his shins and lower arms with a forearm armor plating on his right arm.