Both Sessilee and Peter Parker attended a convention put on by the Brand Corporation about their mutant research. Before the convention started Peter talked to Sessilee about the Brand Corporation's mutant research. Sessilee asked if any mutants, or muties as she called them, would be present at the convention. Sessilee then said that she didn't want to be within one thousand feet of any mutants and called them freaks. Peter was surprised by how much of a bigot she was toward mutants and walked away from her. Sessilee then called Peter a "mutie lover".
- Sessilee was an original character created for Spider-Man: The Animated Series.