Johnathan "Johnnie" Jumble is Digit Al's arch nemesis, since he is a radio star! Sure, some stupid people say that video killed the radio star, but those people wouldn't know RENEI's station from the IKPN ADRIO, since they clearly have the musical literacy of a EAFD UGY! If you notice some of the words are jumbled around, that's just something Johnnie does sometimes for the funnies. It's kind of a stammer like Junkil has, for reference.
Johnnie Jumble's radio station (KBOX) primarily operates on Round Star, but can be heard from the UnWorld if you have the right type of gear. He primarily plays oldies music (60s-70s, specifically), but he does do the weather, news, and even song requests. He sometimes even gets musicians to play live for him, and he gives ratings.
Rumor has it, Johnnie's made of spare Cog parts, specifically a Mr. Hollywood's voice box and a Mingler's torso, but he has not confirmed (or denied) this. However, he has confirmed one thing. He was made as an anti-Dora Smarmy, since he's actually cool and chill. When asked about his opinion on her, he just said she was a ICHBT with issues, and also talked about he's currently friends with Velvet Vic, Isadora's ex.