Syren

Syren (Avery Chance) is a fictional supervillain appearing on ' , being created on October 6th, 1984.

Backstory
Avery was once a struggling artist who ended up joining a gang. Soon, Spider-Man ended up to take down them while they were behind a scheme involving transporting highly dangerous drugs. Spider-Man, quickly learning of this, takes the gang out, accidentally pushing Avery into the material made to create the drug. Soon, she learns that the drug made her able to turn people into slaves. As a result, she decides to become a criminal.

Powers and abilities

 * Mind control
 * Slow aging
 * Agility
 * Peak physical condition

Villainous acts

 * She almost had Spider-Man to reveal his identity in public.
 * She and a Peter under her spell had a child.
 * She controlled MJ to set Spider-Man in a trap.
 * She controlled a whole bank into giving her money and attacking Spider-Man.
 * She controlled a whole restaurant and had them blow themselves up along with the Punisher (who ended up surviving).
 * While Wolverine was heading to hunt down her, she ended up to control a whole highway to attack Wolverine.

Other Versions

 * A version of Syren appears in Ultimate Marvel: Earth-2. This version is Namora's apprentice and loyal follower, and an Atlantean siren with the ability to cast illusions and control minds with the power of her voice.

Live-action

 * Spider-Man 2, played by Neve Campbell.
 * Spider-Man: Far From Home, played by Miranda Cosgrove.

Animated

 * Spider-Man: Return to the Spider-Verse, voiced by Anna Camp.

Animated

 * Spider-Man: The Animated Series, voiced by TBD.
 * The Spectacular Spider-Man, voiced by Grey Griffin.
 * Ultimate Spider-Man, voiced by Mae Whitman.
 * Marvel's Spider-Man, voiced by Cristina Vee.
 * Iago PUC's version of Marvel's Spider-Man, voiced by Marisha Ray.
 * Syren also appears in the continuity of Marvel's Spider-Man: Webbed Champion, voiced by Fryda Wolff. This version is a former student of Midtown High School who was presumed dead following an accident with a mystical gem which was brought in by Meredith Midas, but in reality became the host of a witch's ghost housing the gem. She soon became a deranged metahuman with superhuman strength, speed, stamina, flight and the abilities to let out a sonic wave from her voice, which can (depending to her will) destroy subjects, corrupt minds or force her victims to experiences hideous hallucinations (including what they fear the most), and also stretch and control her hair (similar to the Inhuman Medusa). Blaming Meredith for her condition, Syren spent most of her supervillain time seeking revenge on the Midas family, despite interference by Mary Jane Watson / Tigra and Kamala Khan / Ms Marvel.
 * Marvel: All New, All Different Chronicles, voiced by Fryda Wolff.
 * Spider-Man: Unleashed, voiced by Kari Wahlgren.

Trivia

 * She is one of the comics' female characters who is shown to be attracted to Peter, along with the classic cases of Mary Jane Watson and Gwen Stacy, Lana Osborn, Felicia Hardy and a few others.
 * Despite being a Spider-Man villain, she also fought the Punisher, Deadpool, Wolverine, Young Avengers and Captain Marvel.
 * Syren is currently one of most dangerous Marvel villains due to her being a powerful siren and able to control anyone, just with her looks.
 * Her and Peter having a child winds up being a controversial storyline.
 * However, a similar situation was seen before with Gwen Stacy and Norman Osborn.