Scary experience; please help
Tools for Empaths
It could be a manifestation of your fears, an image of pain from the past, or it could be nothing but a mental object or trick of the mind. There is no way to know really what it is. It could be an image that has a lesson for you, but you are not at a point to fully understand that message as yet.
The best way to deal with scary images like these during meditation would be to simplify your meditation. Scrap the chakras and all the colored lights for the time being. The best method to start with would be metta. Stick with metta for several weeks or months at least.
Don't fear the image or try to fight it. You can send him kindness or just ignore him. He isn't something you need to defeat.
If you are aware of any unwholesome mental states, hate, ill will, jealously, and even fear, work on getting rid of them. They can manifest as images during meditation. Metta will help immensely with that.
Lots of elements of our histories (emotions, memories, etc) can be brought to surface during meditation. It can be very helpful in dealing with the past but sometimes it needs to be approached slowly and with tried and tested specific forms of mediation that are known to be safe. Metta is the safest and gives you a platform to base further work.
It is very common for people to see images such as these when beginning meditation. I did and many other people on here have mentioned similar ones. I personally think that they are (sometimes) images representing some negative aspect of ourselves that we are carrying around, but some would say they are actual entities. Even so, they could be an entity created by us from our negative mental states. Whatever they are, they are not to be feared.
Here is an example of metta meditation. At the end of these meditations, it is good practice to send metta to all beings, around you, in your home, in your town, etc...Negative states of mind (or entities) do not bother a person full of kindness:https://www.youtube.com/watch?v=CRHWU122L9sLet me know if this helps:)