While in Castelia City, Iris goes to Burgh's latest art show to inform him that there's a challenger waiting at his gym. He asks her for her honest opinion on his work and she is, so to say, not a fan. Her words send Burgh into depression until she brazenly asks him if he's wearing honey-scented cologne (which bizarrely cheers him up). When Bianca is found unconscious, Iris helps retrieve her kidnapped Litwick from Team Plasma.
Iris is straightforward and honest, not mincing words, to the point of being frank.
Fraxure → Haxorus
Iris rode Haxorus when it was a Fraxure.