His first feature film role was probably in the 1975 gay adult film Boynapped! He subsequently appeared mostly in straight porn films shot in New York such as Barbara Broadcast, Jail Bait, Summer of Laura, Punk Rock, Marishino Cherries, and Teenage Pajama Party. Posa was credited as Wade Nichols in most of the adult films in which he appeared.
In 1979, using the name Dennis Parker, he recorded a disco album on Casablanca Records entitled Like an Eagle. The album was produced by Village People creator/producer Jacques Morali. The title track was released as a single, and appears on the 1994 box set The Casablanca Records Story.
Seriously ill by October 1984, Posa was unable to continue working on The Edge of Night and his character was written out of the show. The date of his death is commonly reported as January 28, 1985, but the Social Security Death Index indicates that Posa died in March of that year. (According to a persistent rumor the cause of death was a self-inflicted gunshot wound, but this has never been confirmed.)  In a tribute to Posa in a 1985 issue of Soap Opera Digest, fellow Edge of Night actor Ernie Townsend wrote, "He died in early January after a long and painful illness that took away a talent in its prime."  An obituary released in Virginia stated that he died after a "brief illness, survived by his mother, brother, and partner."
|Bang Bang You Got It||Video-X-Pix||1976|
|Beach House||Caballero Home Video||1980|
|Bizarre Thunder||Ribu Video||1984|
|Call Me Angel||Video Home Library||1975|
|Captain Lust||International Home Video Corporation||1977|
|Come to Me||Air Video||1976|
|Jail Bait||Command Video||1976|
|Love You||Essex Video||1979|
|Secret Dreams of Mona Q||Arrow Productions||1976|
|Summer Of Laura||VCA||1975|
|Teenage Pajama Party||VEP||1977|
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