Conversation so far:
What were Pinhead's (Hellraiser) powers?
Pinhead is an extremely powerful being, and as such, has several supernatural abilities.
What are some of Pinhead's (Hellraiser) supernatural abilities?
Pinhead's preferred method of attack is by summoning hooks and chains to mutilate victims, often pulling said victims in several directions to tear them apart.
What are Pinhead's (Hellraiser) weaknesses?
In order to act in the physical world, Pinhead needs to have been purposely summoned through the Lament Configuration.
What else besides needing to have been purposely summoned through the Lament Configuration to act in the physical world is a weakness for Pinhead (Hellraiser)?
Pinhead at first has no memory of his human past, though is reminded in Hellbound: Hellraiser II, resulting in him being spiritually weakened and killed by the Chanard Cenobite.

Question: What is an example of his limitations?
Self-contained rewrite: What is an example of Pinhead's (Hellraiser) limitations?