Looks:blond hair and blue green eyes

History:At a very early age jack had a strong sense of smell and a great memory
he could memorize every person and object that had a smell and could memorize a ship a house and every face he would see

Jack was born In Scotland but came from Icelandic/Scottish family.

Jack's parents (Alexsander Grey and Melkorka Grey) were on a starfleet ship and did travel a lot when he was a kid.
His granddad was named Jack so he was named Jack Alexsander and his grandmother was named Rosa so his sisters full name is Rosa Melkorka Grey
Jack wanted to take his mothers job as a security officer
or be a doctor like his dad but went as a Scientist like his sister
Rosa for that was what he is best at. Although His full name is different for his Scottish clan is called the McGreyings so his full name is Jack Ingi Alexsander McGreyings

His uncle's (his fathers brother) son James Grey is serving on Corvan V as CSO.
and another uncle (his mothers sister son) Peter Sigmundsson is serving on board the Curie as COS

He sometimes would carry a 15cm dirk hidden in his socks
and often when of duty he'd have his family's kilt like a belt
wrapped around his waist

There He was a part of a quartet called "The singing Cadets" Composed of Himself
Jake Asgerson, Joey BluereGarde And Matthias BluereGarde And they were apart of a bigger Group Called The musical Cadets With Three Other quartets Called "The Brass Cadets"
"The string Cadets" And "The Wood Cadets"

Him and his best friend Jake Asgerson were always on a holodeck in golf or
football.

Two years before joining starfleet he landed in a bar fight with a Klingon
captain by the name of N'tunga and Tunga Broke his nose and right arm
after that his mom put him and all of the musical cadets trough a battle
training program with a klingon was called Edna and was a chef and ex-soldier
and learnd how to protect himself.
After a year he had finished his training an was in another
bar with the singing cadets and met N'tunga and a three of his friends
:an Orion pirate, a Klingon soldier and his sisters ex-boyfriend who cheated on her.
After the fight which The singing cadets won they all joined starfleet.

carrier: joined the USS Challenger Stardate 09013.1 left stardate 09111.5
joined the USS Aztec stardate 09111.7