I am going to focus on Slenderman's abilites for a moment.

He can take children without being seen by adults. Visible to only children and camaras. However, it is interfering with my eyes but this may be due to keeping my powers suppressed. It is strong enough to block people from going to the Dead Zone, which is on level with Paradisa itself. Paradisa may not be involved with the creation of Slenderman.

This tree, 'blood tree' is a physical hook in our world....immune to my fire and other attempts to uproot it. It is as strong as Slenderman itself is.