+ Doctor Who / Thor Crossover (WHAT IF: FANDOM AU) || Part I, II, III
What if: The Doctor had visited Loki numerous times during his long life span, bringing him along to adventures and sharing the universe with him. Unfortunately, one day when Loki needs him, the Doctor doesn’t come to help. (Around the time he realizes that his father had been lying about his real heritage.)
"You’re too late, Doctor."