The only description that comes to mind is that Lilith appears as a female night demon, though the KJV calls her a ‘screech owl’ of all things (honestly, one of the stranger translation choices).
Catholic tradition has developed extensive demonology outside of biblical sources. Whole different rabbit hole though.
The detection system God built into the church is spiritual, not optical.
A few years back, I was three days into a fast, praying in my room, and I felt this heavy, suffocating pressure. Not visual, not auditory. Just hostility and dread, thick enough to choke on, and I knew it wasn’t coming from me.
My pastor later walked me through 1 Corinthians 12:10 - the gift of ‘discerning of spirits.’ Look into it.
In my understanding, scripture never gives us a visual detail because we were never meant to identify them with our eyes.
I wonder how many people dismiss genuine encounters because nothing appeared to them. It’s sad and concerning that movies have trained us to expect some manifestation you can point a camera at.
In every single encounter Jesus had with demons in the Gospels - the Gerasene demoniac in Mark 5, the synagogue in Mark 1, the boy in Matthew 17 - there’s no physical description of the demons themselves.
The entire narrative is about authority, commands, and obedience. Jesus spoke, and they obeyed. That’s it.
Thank you, Jesus, for His complete authority over every dark spirit.
The deception might be the most ‘biblically accurate’ feature here.
Scripture literally warns that Satan disguises himself as an angel of light (2 Cor 11:14).
If you want a more Bible-forward angle, look at how demons actually behave when confronted.
They recognize Jesus. They bargain, they name territories (Mark 5; Luke 8).