Striking Lisa, who is blonde with green eyes, and stands 6ft 3in tall, claims her mother gave birth to twins after a bizarre encounter with two aliens.
Lisa, whose surname is not revealed in the video, says her mother was supposedly pregnant with just a son in 1975, when she was born.
She is now convinced she was implanted into her mother by aliens after they “visited her while she was pregnant”.
Her bizarre story was revealed for the first time by UFO researcher Luigi Vendittelli from Montreal, Canada, on the Earth Mystery News YouTube channel.
Mr Vendittelli said: “Her mother was eight months pregnant and decided to go upstairs into the bedroom to take a break.
“The moment she hit the bed she was immediately paralysed and she started seeing this metallic grey object.
“She suddenly feels the presence of somebody near her and sees these two tiny little beings with big heads and big black eyes standing by her bed.
“She heard them in her head with one saying ‘she’s not ready yet’ and the other saying ‘yes she is’.”
But, she told them to go away, and they did before the metallic object “backed out the wall” of the room in St Geron, Quebec, Canada, he said.
He added: “What’s incredible is her mother had this experience a month before giving birth, and there was no evidence of another baby when her mother was pregnant.”
He said when she gave birth the doctor had left the room after the boy was born, but were called back by nurses who said “there was another baby inside”.
Lisa has apparently gone on to have several UFO encounters of her own as she has grown up, and has paranormal abilities, such as clairvoyance.
She said in the video she feels she has been placed on Earth by aliens for a purpose.
She said: “I have an explanation behind being here and it is somewhat not quite the same as other individuals.
“However, I feel there are many individuals like this.
“There is something to be finished. We have to change things and it’s an overwhelming weight to have.”
There are growing numbers of people coming forward with similar stories claiming to be alien hybrids on Earth.
A promotional blurb for the video said: “Half breeds are frequently characterised as the offspring of abductees who have been subjected to contact with outsiders where ladies have been impregnated.
“The outcome is the introduction of an outsider human cross breed with outsider attributes.
“It is the human qualities that are more dynamic. However something else is seen and these human half and halves feel like they don’t completely have a place on Earth.
“The eyes of these human/alien hybrids are regularly profoundly convincing.
“When they take a gander at you, it feels as though they achieve profound into your spirit.
“Cross breeds additionally report that they are exceptionally instinctive. They sense, feel and apparently discuss clairvoyantly, with their patrimonial clairvoyant aptitudes tuning into read the contemplations of people without saying a word to them.”
Sceptics claim there is no evidence for the hybrid theory other than people’s accounts, which seem to have increased in number since the growth of the internet, with similar accounts often being repeated.