Travis Mayweather is a fictional character, played by Anthony
Montgomery, in the television series Star Trek: Enterprise, serving as a
navigator and helm officer aboard the starship Enterprise. He holds the
rank of Ensign, and is in the command division.

Character overview

Mayweather was born in 2126 aboard the ECS Horizon, a human J-class
cargo ship, and visited many places such as Trillius Prime, Draylax,
Vega Colony, and both Tenebian moons. He is a "boomer", meaning he grew
up in space aboard cargo ships, and that he has more experience in space
than even his commanding officer, Captain Jonathan Archer.

Mayweather is a quiet and enthusiastic young man who is a highly skilled
pilot and has some spelunking experience. He has at least one brother,
Paul, who became the captain of the Horizon after the death of their
father, the ship's previous captain, in January 2153. Their mother,
Rianna, was the ship's medic and chief engineer. Mayweather returned
home to the Horizon circa January 10, 2153 while the Horizon was heading
to the Deneva colony. While heading to Deneva Station, the Horizon was
attacked by pirates but Mayweather's experience with weapons from
Starfleet allowed the Horizon to defend herself against her attackers.

Over the course of the series, Mayweather has been injured,
incapacitated, or even "killed" more times than any other character in
the primary cast.

When Star Trek: Enterprise was first conceived, Mayweather was intended
to be a lieutenant, because of his experience in space. His rank was
changed to Ensign because the producers thought that having Mayweather
and the older Malcolm Reed at a similar rank wouldn't be believable.

In the final episode of Enterprise, it is indicated that both Mayweather
and Hoshi Sato are still ensigns despite having served aboard Enterprise
for ten years. The reason for this has yet to be chronicled, although it
is not unheard of for Starfleet personnel to serve for extended periods
of time without promotion, such as Harry Kim, who remained an ensign for
the entire seven years of Star Trek: Voyager; the demotion of Tom Paris
in that series also sets precedent for an as-yet un-chronicled incident
that may have had a bearing on the two officers' ranks. Part of this
could have been that the Starfleet of the 22nd century does not seem to
have the ranks of Lieutenant Junior Grade or Lieutenant Commander (thus
making promotions fewer and further between).

Mirror Universe

In the two-part episode "In a Mirror, Darkly", the Mirror Universe
version of Travis Mayweather is a sergeant in the MACO corps. He
eventually allies himself with the Mirror Hoshi Sato in her attempt to
take over the Terran Empire.