A Sydney-based Australian editor, writer and artist who works predominantly in the speculative fiction (horror, fantasy, science fiction, super-hero) and mystery realms.

His published work includes poetry, prose (especially short fiction), and comic-book scripts. Sequeira’s creator-owned work includes “Sherlock Holmes: Dark Detective” (with co-creators Dave Elsey and Philip Cornell), Pulse of Darkness, Rattlebone: The Pulp-Faced Detective and The Borderlander and SuperAustralians.

He has also written for American publishers, notably contributing a Dazzler story, “I’m Gonna Stake You, Sucka” in X-Men: Curse of the Mutants – X-Men vs. Vampires No. 1. This story also features a character, Sheba Sugarfangs, invented by Sequeira for Marvel Comics. 1n 2023 he wrote “Star Trek Holoween” for IDW.

In 2010 Sequeira released Pulse of Darkness: The Vampire Syndrome graphic novel, a 140-page graphic novel illustrated by Kurt Stone, and also featuring inkers and pin-up artists representing some of Australia’s best, including Mark Morte, Bryce J. Stevens, David ‘Hyperdave’ Richardson, Ashley Riddell, Gary Chaloner, W. Chew ‘Chewie’ Chan, Paul Abstruse, and Jan Scherpenhuizen.

He has self-published and published the works of others under the imprints of Opal Press Australia and Sequence Productions Pty Ltd. Sequeira has been a regular guest at comics and pop culture expos in Australia including Supanova Pop Culture Expo[2] and Armageddon.

Sequeira’s wedding ceremony in 1999 was covered on Australian national TV due to the celebrant and bridal party being dressed in costume, including Dracula, and Batman villains Penguin, Two-Face and Riddler.[citation needed] Sequeira lives with his wife and two children in Sydney.