Alli refers to his thirty years of work in experimental theatre as paratheatre, a term borrowed from the writings of Jerzy Grotowski.[1] He conducts private workshops in the Bay Area, some of which have evolved into public productions and provided the material for his films.[2]

Between 1976 and 1999, Alli wrote and directed a series of stageplays exploring mystical themes in "Circles" (1976), "Coronation at Stillnight" (1977), "The Conjunction" (1978), "Chapel Perilous" (1983), "Animamundi" (1989), and "Hungry Ghosts of Albion" (1999). Between 1992 and 2002 Antero co-curated the Nomad Film Festival, a Pacific coast touring venue featuring short experimental films and videos.[3] Since 1993, Antero has redirected his focus to the creation of underground feature-length art films with mystical themes such as "The Oracle" (1993), The Drivetime (1995), Tragos (2001), Hysteria (2002), Under a Shipwrecked Moon (2003) and The Greater Circulation (2005), a cinematic treatment of Austrian poet Rainer Maria Rilke's "Requiem For a Friend."

Alli's books span a number of subjects, but all share common themes with his paratheatrical efforts: archetypes, personal mythology and the use of ritual to transform consciousness. Like his colleague Rob Brezsny, Alli proposes a free will approach to astrology, which advocates providing clients with the information to make decisions instead of deterministic predictions. In Towards an Archaeology of the Soul (2003), Alli presents a detailed account of the theories and processes that go into his own paratheatrical creations.

Between 1991-95, Alli was editor/publisher of Talking Raven Quarterly, a Seattle-based literary journal featuring the writings of Robert Anton Wilson, Hakim Bey, and Rob Brezsny among others.[4]

In Spring and Fall 2006, Alli taught a course on his book AngelTech at Robert Anton Wilson's Maybe Logic Academy.