So, for the past 50 years, the Ninja Clans have lived in secret, in designated areas around the world. Only select members of 1st World governments had any idea they existed.

However, after 50 years of the Ninja living in total secrecy, a Ninja was caught involved in various scandals with the Mexican Government. The ninja was captured by an american anti-terrorist group and placed in custody. They had planned to interrogate him in order to find out where the Ninja Lived. There plans were cut short when the ninja commited grisly suicide in his cell, but the governments now knew that the ninja existed. They searched the world, eventually killing off all but a few of the smaller Ninja Clans.

The few Ninja Clans then spent their lives as gypsies, roaming around the world and, once in a great while, raiding weak cities with poor defenses, such as Missoula, Montana, of which they killed almost the entire population. No one found out Missoula was gone until several years later... no one had really bothered to check on Missoula. Governor Mark Racicot: "We'll come back later... its not like Missoula is just going to disappear!"

This was the world that Toshiro Tenchumaru was brought up into. He was exceptionally talented in the various skills of the Ninja, starting to learn at an early age. He learned to speak english, and though he started out using a VERY strict Japanese honor code, he eventually learned to be more understanding of Americans (Basically, he learned not to curse people for helping him in the street).

At about age 15, he was discovered to be partially narcoleptic. His parents found drugs to help keep him awake, but he didnt always have a steady supply. He sometimes fell asleep in the middle of the night, which irritated the hell out of the Clan. (They moved by night and slept by day). 

All in all, he had learned all the skills that a Ninja must have by age 17. His parents congratulated him. The clan honored him by giving him his customary sword( the Ninja-To), and a Japanese Style Katana, then held a celebration in his honor, then liquored him up and left him for dead in the middle of the mountains in Montana.

When he awoke, he immediately realized the situation. He was stuck in the mountains with no food, his clan had disowned him, and he was severely hung over. 

To make a long story short, he applied for the armed forces, thinking his weapons skills would give him a good head start. However, he only really knew about the use of one modern weapon... long distance rifles. So, he joined, caught the attention of a major army commander, got put in a sniper division, got promoted because of his naturally high dexterity and calm, unshaking hands. Most marksmen used drugs to keep their hands steady, but his hands seemed as still and calm as stone. Upon becoming the leader of a secret-ops division, he was immediately kicked out for falling asleep during an important training mission.

After this he was driven out of America by poverty. He spent his time in Greenland because the cold didnt seem to bother him too much. He lived there for about a year before the aliens attacked and destroyed everything. He took an emergency boat off of Greenland, fleeing with the terrified survivors, and they headed for Alaska.Going around the Northern part of canada, they went as far as they could before the fuel supplies on the cruisliner had run out. They crash-docked in Canada, not realizing they were only 50 miles away from the canadian border. Toshiro immediately continued walking toward Alaska, living off the wildlife and using his Herbal skills to make drugs that kept him warm. Eventually, there was no more caribou... and he was stranded in the middle of Alaska. 

He wandered for 40 Years in the Cold Desert... actually more like about 40 hours, but it seemed like years. Eventually, he gave up. The only things he had with him were his night-suit, his Katana, and his Ninja-to. He collapsed in the snow and fell into a sleep he should never wake up from. 

A half hour later, a scout from a group of american resistance Fighters called "Cold Force" picked him up, almost half dead, but hanging on by a Miracle... This is where his contribution to the story of the Cold Force begins...