(Capcom's primary storyline)
"The traveler" is a minor character in Resident Evil: Revelations 2.
He was an adventurer who, in late 2008, chartered a helicopter to Sushestvovanie Island to explore the island which, he noticed, did not appear on any maps. The locals at the fishing village were less than hospitable, considering him to be a spy, and locked him up in a shack.
During his imprisonment, he noticed the villagers starting to worry about the disappearance of their relatives, who were taken by Alex Wesker to work in the island's mines. Being left alone by the people, who never returned to the village, he soon realized strange and mysterious creatures wandered around the premises, possibly the Orthrus. Being locked in the shack and having no one to look after him, he died from extreme thirst, as he desperately wrote in his final letter begging for water.
The traveler was never infected by the t-Phobos Virus, and so he was able to write down his experience and thoughts until his death.