Ranking every Spider-Man: Brand New Day theory about Sadie Sink's secret character

Theory Briefing

• Fan theories range widely, naming candidates from Firestar to Jean Grey as Sadie Sink's mystery character in Brand New Day.
• Primetimer ranks each theory using leaks, on-set clues, and cast interviews to weigh their plausibility.
• The secrecy around Sink's role has fueled speculation intense enough to produce a ranked tier list of competing identities.
• No official confirmation exists, making every theory a reading of indirect evidence rather than hard fact.