Trevenant (sig poke since he is the one who turns children into phantump) Banette (chases children) Cacturne (follows) Wobbuffet (attacks are useless to slenderman and there is no escape) Sableye (prankster just seems fitting and slenderman has no weakness) Tangrowth (good god the tentacles)
Maybe he would switch out for an Elektabuzz for static
Link - Legend of Zelda - Aegislash (Master Sword and Shield) - Spirtzee (Fairy) - Mightyena (Wolf - Twilight Princess) - Gardevoir (Shiny - I think this could be good for Fi) - Ponyta (or Rapidash) - And I am having trouble for a last slot ... Any ideas?
Alice (Virtue's Last Reward) Alakazam (Super-intelligent.) Lopunny (Just look at her.) Marowak (Tragic loss of a parent, but everything is fully-evolved so.) Cofagrigus (Egyptian mummy.) Lapras (Water in her body is [rumored to be] ice-9.) Signature: Klefki (Practically created for the purpose of being a *****.)