Out of all the TVA agents we've seen, Mobius M. Mobius' civilian history has been teased by far the most. The character's obsession with jet skis and reluctance to research his original life have been sources of intrigue almost since the show started, and "Science/Fiction" finally sheds light on both.
As it turns out, Mobius doesn't own just one jet ski. He owns two and also sells the things for a living. A single father of two whose real name is Don, this version of Mobius is clearly a bit exasperated with his ordinary life and is greatly intrigued by the revelation of his real identity — well, as Loki sees it, anyway. However, he's also more than willing to turn it down because it would mean leaving his sons behind.
Mobius being a hard-working single dad fits the character like a glove and explains a lot about his mentality. Even as a memory-wiped TVA agent who's served for who knows how long, he radiates sarcastic, mildly frustrated dad energy. Even his default mode of treating TVA prisoners like Loki and Brad (Rafael Casal) resembles a patient but disappointed father dealing with unruly children. His unwillingness to investigate his background makes sense now, too. Deep down, he might subconsciously be aware that he has left his children behind ... just like Don explicitly tells Loki he would.
