Suyadi created Si Unyil as an educational program for Indonesian children in the 1980s.

Suyadi was a fine arts graduate of Bandung Institute of Technology (1952–1960) and then continued studying animation in France (1961–1963).

Suyadi was also asked by the Ministry of Education and Culture of the Republic of Indonesia to illustrate Indonesian elementary school level textbooks.

[2] Suyadi died on October 30, 2015, at Pelni Petamburan Hospital at 22:20 pm.

[3] His body was buried in Jeruk Purut Cemetery, South Jakarta, Saturday, October 31, 2015.