[TIGHazard]

I guess you could say the later series of The Disney Club was a lot like Number 73 with it being scripted segments with the presenters playing characters in between the usual interviews, features and performances (though Craig Doyle tended to handle most of that rather than the younger presenters). Which is why Paul "jailbird" Ballard was known as Des, as that was his Disney Club character, but it stuck even after he took on the more straightforward presenting role in Roadhog and Diggit. In the video I posted a couple of pages back you can see Gunnar Cauthery was called Roland, and when he joined later on Reggie Yates' character was called Robbie (though he did occasionally present Diggit with his real name), I think Fearne Cotton was the only child/teen presenter to use her real name (as she became presenter via winning a contest- I remember a few years back seeing a programme showing a clip of "Des" revealing her as the winner).

The Goggle watch segments that took over CITV continuity for a week a year for a while in the 90s was a similar sort of idea, Why Don't You ended up that way towards the end as well, and the first series of Parallel 9 (less so the second and third when they had presenters separate to the scripted characters).

There was also CBBC's 2004 show Mysti.

en.wikipedia.org 

The hour-long shows were a mix of drama and entertainment, featuring 40 minutes of magazine and feature content wrapped around two 10-minute segments of narrative drama. The feature content included a game show element titled The Battle of Elbubb.

The characters within the narrative segments included Mysti (Laura Aikman), who is half-human and half-fairy; and her friends Rick (Oliver Mason), Ella (Eva Alexander), Ollie (Ashley Campbell), and Abby (Yasmin Paige). Other characters also appeared frequently, such as Professor Dust (David Sterne) and Tatiana (Tricia George), fairies Snowdrop (Amy Pemberton) and Peaceblossom (Danielle Tabor), and diner owner Mr. K (Richard James).

Mysti, Rick, Ella, and Ollie would also appear, in character, as the presenters of the magazine segments of the show.