Symkaria

Inhabitant(s): Silver Sable (Sylvia Sablinova)

Features
Marvel Atlas #1.FT
Marvel Atlas TPB #1.FT
Marvel Europe TPB #1.FT

Synapse (Emily Guerrero)

Gender: ♀
Individual of: Inhumans (I)
Member of: Avengers Unity Squad

Synch (Everett Thomas)

Created by: Fabian Nicieza, Andy Kubert
Gender: ♂
Member of: Generation X (I)

Features
Generation X (I) #1.FT, 57.FT
Marvel Swimsuit Special #4.FT
The Official Handbook of the Marvel Universe: Book of the Dead 2004 #1.FT

Syndicate (I) (R-1610)

Universe/Dimension/Timeline: Reality-1610 (Ultimate)

Features
Ultimate Secrets #1.FT

Syndicate (II)

Member(s): Beetle (Janice Lincoln), Electro (Francine Frye), Lady Octopus (Carolyn Trainer), Scorpia (Elaine Coll), Trapstr, White Rabbit

Syne the Memotaur

Member of: Hex (II)

Micah Synn

Gender: ♂

Features
Marvel Legacy: The 1960s-1990s Handbook TPB #1.FT
Marvel Legacy: The 1980s Handbook #1.FT

Syphon

Member of: Cloud Nine

Jemaine Szardos

Gender: ♀
Alias: Magik (Jemaine Szardos), Amanda Sefton
Parent(s): Margali Szardos

Margali Szardos

Gender: ♀
Child(ren): Jemaine Szardos

Features
All-New Official Handbook of the Marvel Universe A to Z #7.FT