The Sons of Trigon are a group of three, so far. The group is introduced by Belial, who is the eldest and most powerful, and the younger Suge and Ruskoff. Belial considers himself the most even tempered, well mannered and articulate of the three, but that all three of them are ready and powerful enough to retaliate if the Phantom Stranger should attempt to betray or manipulate another child of Trigon, as he did Raven.
After reclaiming Titans Island on the East River, Cyborg set out to create an East Coast Titans team. But the team was brutally massacred by an unseen evil force. Soon, Titans members past and present were being attacked by demonic entities across the globe. Raven, sensing Trigon's presence once again, called upon her former Titans allies to defeat her fiendish father.
But after investigating, the Titans learned that Trigon himself was not behind the attacks. The bestial assaults were actually orchestrated by Raven's three half brothers Jacob, Jared and Jesse. Unknown to Raven, Trigon had sired six additional male offspring on Earth years ago around the same time she was born. After their mothers all died under mysterious circumstances, these Sons of Trigon manifested emotion warping powers and gathered together in a plan to claim their demonic inheritance.
Using Raven as a doorway, the Sons of Trigon opened a portal to the desolate realm where a weakened Trigon awaited. The Titans rallied to Raven's aid, and feared Trigon would be unleashed on Earth once again. But the brothers betrayed their father by siphoning whatever small power was left within him. Due to Raven filling them with greed. Instead of being angered by their duplicity, Trigon was actually proud of his devious progeny.
Now, having claimed their demonic birthright but realizing they got almost nothing from Trigon, the Sons of Trigon joined with their other three siblings. Recognizing their power as a unit, the Sons of Trigon ignited Raven's demonic side and had her join them, forming the Seven Deadly Sins.
The Titans were able to locate Raven and her brothers using the Ramat Stone, a mystical gem Raven had entrusted to Donna Troy. Although Raven proved more powerful than her sinister siblings, judging them to be unfit to carry the powers of Sin with her, her evil nature threatened to overtake the Titans as well. But the Ramat Stone unleashed a mystical fail safe, a sliver of Raven's pure essence which was imbued into the stone by Raven herself in case she was ever overtaken by evil. This pure essence restored Raven to normal.
Since then, the six brothers have remained in hiding, save for Envy who would try to turn Raven once again, failing in the attempt, but promising her that they would be waiting for the day she realized where she belonged.
Pride - Raven, the Original Sin.
Wrath - Jared, huge Afro-American, posses superhuman strength and durability, can induce anger in others.
Envy - Jesse, can take the appearance and powers of object of envy, such as Wonder Woman and Barry Allen, can induce envy in others.
Lust - Jacob, causes people to loose their free will, just to please him and make them open to suggestions of others about how to make him happy as he did, causing Wally West and Donna Troy to engage each other out of affection for him.
Sloth - Jack, skinny unshaven and long haired, can instantly turn the bodies of others into what they would be like if they were lazy, such as knocking Nightwing and Arsenal down while causing them both to grow full beards.
Gluttony - Obese bald man, shown to instantly drain the energies of his targets, such as reducing Donna Troy and Starfire to skin and bones after consuming their muscles and fat.
Greed - James, suit wearing Afro-American, the effect of his powers have yet to be revealed as he was knocked out by raven before he could display them.
It is worth noting that the effects of the powers of the Sins are all temporary, as everyone returned to normal after the brothers were subdued.