Antonius "Toni" Masdiono was born in Malang, East Java. He studied graphic art at the Bandung Institute of Technology from 1981, and stayed in Bandung, West Java, afterwards. He has done illustration work for several magazines and novel covers. In the mid-1990s he made science comics for the album 'Ganesha Bobo'. In 1998, he published '14 Jurus Mambuat Komik' ('14 Ways To Make Comics').
Masdiono makes monthly strips for Komunikasi magazine since 2000, as well as old testament comics for Langlang Mitra, a local Sundanese magazine and contributions to Sequen (including 'Pahlawan' and 'Shima'). He is a lecturer at STDI (Indonesian School of Design) and also a visiting lecturer at Jakarta Institute of Arts.