This is the story of how Michael Mamaril ended up being added to Borderlands 2 as a loot-dropping character tied to an unlockable Achievement. In the real world, Michael John Mamaril was a young man who passed away at the age of 22, a victim of cancer. He and his pal Carlo were huge Borderlands fans, so Carlo wrote to Gearbox asking if the developer could record a eulogy read by the voice of Claptrap.
Gearbox complied in late 2011 -- listen to the eulogy at Destructoid -- but the dev team also went a step further: they inserted Michael Mamaril into Borderlands 2. I ran into him multiple times in the game's town of Sanctuary during my review playthrough, and he always had an awesome piece of rare gear to give me. The first time, there was even an Achievement unlocked. And that's the heartwarming story of how Borderlands 2 honors the memory of Michael Mamaril, someone you'll always be happy to see when you meet him.