His cartoon characters like Gajaman and Siribiris have been published in various Sinhala newspapers ranging from the Sunday Observer to Sivdesa.

[1] Perera began work as a cartoonist in 1966 developing characters for the Observer and "Dekkoth Pathmawathi" for Lake House's film magazine.

[3] He eventually transformed himself into an household name in Sri Lanka among the general audience through the creation of cartoon characters such as Gajaman and Siribiris.

In 2002 Perera celebrated Gajaman's 36th birthday at BMICH, Colombo 7 with chief guest Power and Energy Minister Karu Jayasuriya.

[3] In 2004 the Alliance Française de Kandy sponsored an exhibition which was opened by Professor Kapila Goonasekere, Vice Chancellor of the University of Peradeniya.