"Gail" was the code-name given to a male member of S.O.R.T. (Secret Operation Raid Team) and was put in charge of a small team consisting of himself, "
Regina", a weapons specialist, "
Cooper", a communications specialist, "
Rick", the computer and tech expert and their pilot who had no code-name.
He was tasked with leading the team to a remote island called Ibis Island. There, he an his team were to investigate a secret research facility there and recover a scientist named Dr.
Edward Kirk regarding a project named Third Energy, which supposedly had something to do with harnessing clean forms of energy from the Earth's atmosphere. Interestingly however, he was given secret directions by his superiors to recover Third Energy data as it was thought to contain offensive weapons data and not be concerned with recovering Dr. Kirk. The rest of his team were not aware of this direction.
Although he was highly experienced with leading a team and directing the course of missions, he usually acted alone and simply delegated tasks expecting rapid results. He himself had a traumatic combat history; on one occasion his team suffered great losses and he himself was critically injured. This, paired with other occasions caused him to develop a cold, exacting personality - it's likely that he had a form of PTSD.
He and his team landed on the island via helicopter - himself,
Regina and
Rick all landed together whilst
Cooper drifted away due to the wind. Whilst
Cooper was killed by a Tyrannosaurus Rex (
T. Rex), the rest managed to escape into an outdoor facility area and began exploring. Moments later, whilst he was guarding a building that
Regina was investigating he was set upon by a
Velociraptor. It was soon discovered that Dr. Kirk was working on Third Energy and stumbled upon a way to compress time, causing flora and fauna from prehistoric times to pass into the present via a rift in space-time. This kind of power was what Gail's superiors were really after.
While he managed to escape with a few injuries, he continued with his mission alone as he became separated from
Regina and
Rick - although this was a perfect opportunity for him to conduct his separate mission without rousing suspicion. He continually tracked Dr. Kirk and the Third Energy weapons data.
Gail's death is determinant based on player choices, as
Dino Crisis features several endings. He can either be left on the island to his death in various ways, or he can be rescued by
Regina despite being seriously injured. The data can also either be left on the island or retrieved and then passed on. The canonical ending is that Gail survives Ibis Island and successfully retrieves the data.
He does not appear in
Dino Crisis 2 along with any other S.O.R.T. team members besides
Regina. It's also worth mentioning that the English voice actor, Adrian Truss also voiced Dr. Kirk.