Dan Povenmire and Jeff “Swampy” Marsh are best known as the creators of the hit 'aimed at kids but also popular with grown-ups' cartoon show Phineas and Ferb – though they've been in the industry 20 years and have worked on shows from The Simpsons and Family Guy to Spongebob SquarePants and Hey Arnold!.

The pair was in London for the UK launch of their new comedic children’s cartoon – Milo Murphy’s Law – which launches on the Disney Channel and the DisneyLife online service from today. We spoke to the Emmy Award-winning animators/producers about creating the main character Milo and the overall aesthetic for a show, and how to bring out a character's personality with a limited number of lines.

Watch our interview with both Dan and Swampy above to hear their drawing and character design tips, as they draw Milo and even show you how to draw Phineas from Phineas and Ferb.

Swampy has worked as a co-creator, executive producer, writer and director for the last 20 years on cartoon series like The Simpsons, Rocko's Modern Life and Phineas and Ferb. Dan is best known for serving as a creator and producer of Phineas and Ferb, which has served him eight Emmy nominations ranging from songwriting to voice-over performance. Dan also has 20 years experience in animation, including work on Family Guy and Spongebob SquarePants.

Dan Povenmire (left) and Jeff “Swampy” Marsh (right).

Milo Murphy's Law follows 13-year-old Milo Murphy (voiced by ‘Weird Al’ Yankovic), a character based on an extremely happy mutual friend of Dan and Swampy’s. Milo is the fictional great-great-great-great grandson of the Murphy’s Law namesake. He was born with "Extreme Hereditary Murphy’s Law condition" - a trait that has affected the men in the Murphy family for generations.

Where anything can go wrong, does go wrong, but Milo is prepared for every possibility. Armed with a backpack of supplies, his unwavering positivity and adventurous friends Melissa and Zack, the trio turn anything potentially disastrous into an adventure.

Milo Murphy’s Law contains 22-minute episodes comprised of two 11-minute stories. Celebrities who voice characters in the show includes Christian Slater and Jermaine Clement.

Milo Murphy’s Law is on Disney Channel and DisneyLife from today.