Titled 360 Degrees, the trilogy, which took nine years to create, comprises The Initiation, Jozi Jungle and Back to The Blues.
The 60-year-old says the series describes his life's journey of rebellion against authority.
"People never want to seem to listen when they are in certain positions of authority and they feel they hold sway over everything."
The artist said he learnt how to draw through reading comics and copying various cartoon characters.
"No one around me couldunderstand what it was that I was so crazy about, but I loved it."
The self-taught cartoonist says he was never interested in fame.
"I told myself, whether I got published or not, I would have put my feelings, my views and everything that I was feeling down, and that's all that mattered.
"I could say what I wanted to say - whether you heard it or not. It didn't matter, I still got to express myself."
As if teaching himself to draw and having a successful run as a cartoonist featured in several newspapers was not impressive enough, he is also a self-taught saxophonist.
"I haven't played since my saxophone was stolen in 1998 or 1999 in Soweto, but I'm thinking of picking it up again, the soprano sax this time, not the alto."
His eyesight has recently started deteriorating and Motshumi is finding it difficult to draw.
"I can write still, so I express myself that way, but if my eyesight goes back to normal, I'll start drawing again. If it doesn't, I'll just put my ideas down and someone else can create them."
"Cartoons are something nobody can steal from me and this is the kind of work from which you don't retire. We only retire and stop when we are dead."
The Initiation is available at Exclusive Books in Cape Town, and will be available in Johannesburg at the end of the month. It costs R275.
Jozi Jungle, the second instalment, will be released in February next year...