Ulf was a cop, once. Los Angeles was a busy city with lots of crime. While he was an excellent investigator and a crack marksman on the force, he had several run-ins with the rich and powerful breaking the laws. They spent money, hired lawyers, and ruined Ulf's reputation as an officer of the law.

With a bitter taste in his mouth, he accepted a 'forced retirement'. He moved to San Francisco and opened an investigation agency. While he went from solving crimes to ferreting out cheating husbands and finding missing daughters, he felt more satisfied searching at their request then he was ever working for the police.

And then one day, years later, he received an envelope on his desk. There was only a single phrase printed on the card inside, embossed with a single Norse rune. Curious, he started looking into it and ended up getting dragged into a living puzzle that challenged everything he knew. Months of tracking down clues, finding contacts and dodging suspicious characters later, and he finally found the one who had sent him on this chase.

His father, whom he had thought dead. Heimdall's machinations were a test to see if Ulf had the stuff to see things through to Ragnarok. He had proven himself worthy, and was given enough information to get started on his own path. Given a pistol, a pair of his father's old 'reading glasses', and enough files to get him started, (ST's discretion what's in the files) Ulf Jonnson found himself working a completely different set of cases: Titanspawn Investigations.