Jonas is described as ferocious.
Jonas wore his hair on cornrows and has a scar on his left cheek.
Rise of the Isle of the Lost
Jonas could be seen as one of the Villain Kids selling scarfs and other items at the market during the musical number of Rotten to the Core.
Although his name is not mentioned, it is assumed that Jonas did appear in this film as a member of Uma's Pirate Crew. During the sword fight, he repeated the same scene with Evie when she pulled his scarf.
- The dancer that portrayed Jonas, Navid Charkhi, has previously appeared in Descendants.
- Coincidentally, both of his characters in the two movies shared a similar scene with Evie. In the first film, he could be spotted among the vendors during the musical number of Rotten to the Core. Evie came to him and flirtatiously pulled his scarf. In Descendants 2, during the sword fight, Evie did the same as she said: "Nice scarf. It's mine now".
- This could indicate that they are the same character.