That's an easy one. The character in the aqua headgear is "Pat" (shorthand for PATient) and Pat's purple friend is "Em" (shorthand for EMpathy). "EmPat" comes from joining the friends' names side-by-side.
I'm grateful to my creative team who spent their after-work hours making The EmPat Project happen,
--project director Amory Millard with me here in NYC as we skyped with producer Kevin Smith and animator Cindy Blakney in far away New Brunswick, Canada.
Below are examples of how my original sketches were transformed into GIF animations by Cindy: