Riff

Riff a violet-grey Rock Troll with long black hair, a pink nose, and a rocker outfit consisting of a black beanie hat, jean vest, white shirt, torn black pants, fingerless leather gloves, and a red handkerchief with a skull print. He has an oddly large nose compared to most Rock Trolls. His eyes are covered by his beanie most of the time, but they appear to be blue in the brief time the right one is visible. Sometimes, he also appears with large silver drumsticks in his hands, twirling them about.

Being Barb's right-hand, Riff is a laid-back, but also ready to hop to Barb's aid and does what he's told. He does display a mischievous side, laughing after cutting off the Funk trolls' power. According to Trolls World Tour: The Junior Novelization, Riff is mellow except when he is rocking. Though he supports and is loyal to his queen, Riff finally gained the courage to question Barb's plans in response to Poppy's words that a world where everyone looks and sounds the same isn't harmony, asking Barb how anyone would truly appreciate their music if they lacked differences and diversity. He also has a habit of adding the pleonasm "or something" to his sentences.

Queen Barb

Riff is Barb's right hand man, and he basically does whatever she tells him to do. He was seen slowly edging away when Barb got a face full of glitter, so he's wary of her and fears her temper. But he later gains the courage to speak up to her by arguing that everything will be boring if everyone's forced to turn into the same thing. Tim Heitz confirmed that Barb and Riff are like brother and sister in terms of relationship (or cousins) and there is no attraction between them, therefore reinforcing the fact that they're platonic.

He has most normal Troll abilities, as well as the abilities of his Tribe. He knows how to disable electricity.

It's implied in Trolls World Tour, Trolls: Holiday in Harmony and his official bio that he isn't the smartest of Trolls, which is a common occurence for the Rock Tribe, but like many of his kind is prone to epiphany. In her victory concert, when Queen Poppy avoids the mind-controlling powers of the Rock String, he figures out that if all Trolls are the same, no one would know that they're cool, realizing something that even Barb herself didn't consider about her plan.

He's a drummer, and is seen bashing drums to back up Barb, even using his head from time to time. He tends to somehow hit his drums despite his arms flailing at the same time in an erratic manner.