YMMV / Slender Man vs Siren Head

• Complete Monster: In this battle between two internet horror icons, both sides of the titular Big Bad Ensemble are far from easy to root for:
  • The Slender Man is shown here to be a horrific sadist with a love for targeting children. Over several decades, Slender Man kidnaps around a dozen children, horrifically torturing them in order to reduce them into his army of slaves. Having once again done this to Victor before the story begins, Slender Man also lures in his sister Cassidy purely for the fun of the chase, tormenting her with a "game" of hide and seek before leaving her to be cannibalized by his slaves. Luring in Sophia and Alex in much the same manner, Slender Man manages to take the time during his fight with Siren Head to rip Alex apart before sending his slaves to attack Siren Head, dismissing them as expendable. When he believes he's won the fight, he tells Sophia to run so that he can chase her, intending to continue his sadistic games forever.
  • Siren Head is portrayed as a malicious, predatory entity, out to kill anyone and anything around him for both fun and out of annoyance. Forming a fixation on a cadet named Trevor, Siren Head messed with him for days, playing haunting recordings only he could hear, while everyone on his base thinks he's going crazy. When Trevor goes to confront it, Siren Head nearly deafens him with recordings of past victims, including children and animals. It then proceeded to go on a rampage, massacring Trevor's military base, killing all the personnel, and leaving Trevor to deal with the fallout. Eventually coming across Trevor again, the Siren Head turns its attention on Slender Man out for being in its territory, brutally killing Slender Man's brainwashed slaves for annoying it, and using Trevor as a living club in their fight, before callously killing him. When overpowered, Siren Head pins the Slender Man down so that they'd both die in the burning forest. After it's supposed destruction, it's implied at the end Siren Head may have survived and is now pursuing the only survivor, Sophia.

---