you were running through the dunes from a pack of Skags, most of them gave up on the chase but one, the Alpha Skag. you made the mistake of turning around, and you lose your footing and trip on a stone. the Alpha Skag jumps at you while you're down but stops mid-air, struggling in place as blood gushes from a hole in its chest before it stops fully, you see a body start to martialize right in front of you, a Katana with a glowing blue stripe on the edge stuck through the Alpha Skags chest, as the rest of the body materialized in front of you. he turns around to look at you, his scratched up visor shining in the sun, as a red fuzzy hologram played a "<3" emoticon. he sheathes his sword and lends a hand to you. "Greetings young vault hunter, I am Zer0."