The spider that bit him came from a different universe, Earth-42, which now has no Spider-Man to protect it. Miles isn’t just an anomaly but the original anomaly. If he hadn’t been bitten ...
L ast year’s Spider-Man: Across the Spider-Verse ended on a somewhat down note: Miles Morales was trapped on Earth-42, ...
The spider that was meant to bite Jerome's Miles was pulled across the multiverse by Kingpin's super-collider, creating a disruption in both universe's canon events and plunging Earth-42 into chaos.