The 35-year-old star has recently been promoting her new reality show, It's A Scary World and she is said to be one of the contestants appearing on the show, which is filmed in the Australian jungle.
A source said to UK newspaper Daily Star: 'Mel B will make explosive television. She's got a gob on her and she speaks her mind. She is quite a force to be reckoned with, so heaven help the celebs - and the wildlife.'
It is claimed bosses have been trying to sign the star up for the show for a number of years but she refused.