You know already. We are Team Meteor. And we do not relent.
Paul Clark, commonly known under his codename Sirius, is an admin of Team Meteor and the main instigator for many of their missions.
Sirius is a cruel and sadistic Team Meteor admin who will not hesitate to kill anyone in his way. He is absolutely ruthless and cold to everyone regardless of what rank or state they are in. Sirius firmly believes that full commitment and sacrifice is needed to complete their goals, no matter what the consequences are.
Sirius is next seen in a cutscene at the Opal Ward bridge, where he approaches Dr. Sigmund Connal with an offer of cooperation, declaring himself an admirer of the doctor's work on electro-convulsive therapy. He makes a deal with Sigmund to get what they both want. After the player defeats Shade, Sirius appears in the Underground Railnet and kidnaps rest of the orphanage group - with the exception of Cain.
Cain and the player eventually enter the Yureyu Building to save the children again. Sirius is seen taking the Amethyst Pendant from Anna, which Anna tells him that the pendant was from her dad. Sirius replies that her father was always a fool, which Anna exclaims how he knows her dad. Sigmund and Sirius decides to leave after a battle, with Sirius getting both the Ruby Ring and Amethyst Pendant. Anna is disraught that Sirius knows her dad when she can't even remember a thing about him.
Sirius appears again to reclaim the children in the Belrose Manse, saying he tried to cross the lake until Saphira with her Dragonite shot him and some grunts down. He clipped her wings in return and will not leave empty handed. After a battle, Sigmund and Sirius kidnaps a part of the group back to the Tanzan Meteor Base. The player and Saphira (or Laura depending on your choices) raid the meteor base to get them back. When Sirius reports that Lin is coming to check on the PULSE, Sigmund says the name sounded familiar, which Sirius replies that's because Lin is the true leader of Team Meteor. Sirius orders ZEL to teleport Saphira and the player to Tanzan Depths.
The player later comes back to the Tanzan Meteor Base only to find ZEL being teleported around by Abra with Sigmund watching. Sigmund suggest to simply terminate the project, which Zero and Eve agrees. Lumi however is against it, but Eve says Lin is coming soon and this would be unacceptable to present, and would stop anymore teleportation accidents from happening further. ZEL then decide to battle the player to terminate Abra. After Abra is terminated, Sirius comes in to find the player again. Sirius decides to have the player act like a meteor grunt or else Lin would cut all their heads off. Lin arrives seeing through Sirius lies, but decides to deal with the noise outside. The player is then let go by Sirius, hoping to never see them again.
Sirius appears again in the LCCC after Aya and the player defeat Aster & Eclipse. Eclipse willingly turns off the machine and decides to quit Team Meteor. Eclipse tries to explain that Team Meter wasn't always bad but Lin started to rise through the ranks and took over Team Meteor. However, this statement is short lived as Sirius kills her with his Chandelure. As he turns to kill the player, Aya pushes the player out of the way to safety. Instead of killing Aya, Sirius decides to take her as a hostage and leaves with Aster.
In Calcenon City, Aya is dragged in front of the barrier by Sirius in order to bargain the Ruby Ring for her life. Hardy tells the player to give the ring but Saphira says don't, since the Ruby Ring is important. Hardy then says if one of Saphira's sister was on that side she would think different, which Saphira says she wouldn't change he decision. Charlotte then shows up when hearing Saphira and asks if the player would trade her for the Ruby Ring. however, either choice will lead Charlotte to taking the ring and running off to "make a deal" with Team Meteor. Sirius then says he will send someone and drags Aya back to Labradorra City.
Sirius appears again when Team Meteor attempts to steal the Sapphire Bracelets back from Amaria. Florinia, Julia and the player helps Titania to fend them off. After a series of battles, Sirius tries to burn down the house using his Chandelure. Titania then brings out her Excadrill to flood the house with water, due to having a built-in water gym. Failing to retrieve the Sapphire Bracelets, Solaris decides to get help from Lin and retreats.
Sirius' next appearance is during Team Meteor's attack on Agate City, where he is accompanying Solaris, as well as Taka if the player decides to bring Taka through the desert - in either route, Solaris demands to take on the player alone once they and Hardy have defeated the team's grunts.
If you choose to battle Taka in the Water Treatment Center or refuse him in the desert, it will lead you to the Zekrom Route.
If you choose not to battle Taka in the Water Treatment Center and let him tag with you in the desert, it will lead you to the Reshiram Route.
After the player defeats Solaris, Sirius remarks that "perhaps a soft bite runs in the family", to which Taka responds by attacking Sirius with his Chatot. Taka and his Chatot free Ciel and Samson, with the Team Meteor grunts forced to take on the heroes themselves, Solaris in turn reprimands Taka for his defiance, after which he flees to the north with Sirius and Solaris in tow.
After the player defeats Solaris, Sirius taunts him about his failure, eventually revealing to him that Taka was killed with the player witnessing his last moments. Sirius then begins lambasting Solaris's leadership abilities, declaring himself more fit to lead Team Meteor, after which Solaris flees to the north.