Mel

is one of Ben's rival scientists along with Flo. Because of his rivalry, they have done shady things.

Appearance
Mel is an aging male scientist with white hair, glasses and lab coat.

Personality
Mel is very dedicated to science. However, for science he will commit shady crimes like burglary and unethical experimentation.

Magnetic Ben
He invited Ben to help conduct an experiment, and Ben assumed he was going to be a guest scientist. However he was a test subject instead and was zapped with electromagnetic energy.

Ben's Digital Detox
Mel walking with Flo in the streets. They notice Ben walking around and mocked him for being "kicked out of science." They then hear about the Squiggly Man Painting and plot to steal it to fund their research.

Mel broke in Tom's garage to steal the painting. They then find that Ben has set up traps all over the house to stop him. They fall for all the traps, but he was able to get his hands on the painting. Ben, however, sprayed water at him, causing his jetpack to malfunction and sent him flying out the door.

 Talking Roy and Friends 

Like Flo, Mel wanted to help Tom expose Roy, because with Roy helping with Ben's career, more people focused on Ben and his inventions instead of Flo and Mel's.