From Austin Improv Wiki
MC Harold is an improv troupe.
 Press BlurbTheir press blurb, taken from a 2015 application to perform at The Hideout Theatre:
MC Harold A Magical souffle of improvised rap stuffed with delicious stories with just a dash of outlandish characters sauteed to perfection when the beat drops.
 "What's Your Deal?"Their answer to the "What's Your Deal?" question on a 2015 application to perform at The Hideout Theatre:
In short, we do the Harold and replace group games with live improvised beats and rapping in between scenes. The rapping portion helps to create, paint, and explore the themes, story or characters within the world of the Harold.