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The comedian described his project while speaking on Radio 2's Steve Wright in the Afternoon show.
Discussing what he would do now his 18-month stand-up tour is finished, Kay said: "I'll go back and do characters now. Go back to writing characters."
He continued: "I'm already doing something on Channel 4 next year. It's like a spoof of Secret Millionaire. I'm playing an old Irish guy from Limerick who runs a coach company.
"So it's nice to be able to put the stand-up away and put a wig on, and some false teeth, and be somebody else for a while, and do that for a few years."
Kay's previous TV projects include Phoenix Nights and reality contest spoof Peter Kay's Britain's Got the Pop Factor... and Possibly a New Celebrity Jesus Christ Soapstar Superstar Strictly on Ice.
Stand-up DVD Peter Kay: Live & Back on Nights went on sale this week.
Watch a clip from it below:
