Argit is bound and lying on the ground at the team's feet. When Kevin walks away, Argit is inexplicably nowhere to be seen and is never dealt with again (this episode).
When Vulcanus captures Kevin, forcing him into a transformation, Kevin seems unable to transform out of it until Gwen arrives. No explanation is given for why he couldn't (or wouldn't) transform through contact with his clothes, his manacles or with the floor.