Graffitist DXTR has a similar urban cartoon style like Nychos, and what is interesting is, they have both collaborated on various murals as part of The Weird crew. Here are a few examples: 1 and 2. In additional to spray painting walls, DXTR has also a vast collection of t-shirt illustrations, many recent ones were commissioned by Nike.
Top: A graffiti piece by Low Bros and DXTR.
Top: A collaborative project by Mr.Penfold, Low Bros, Mr.Gauky, and DXTR.
Photos © DXTR Via Behance Network