To dream of a blob may represent feelings about some area of your life being disgusting with no concern about it.
To dream of a giant living blob monster may reflect feelings about people who scare you with how lazy, selfish, and disgusting they are. Feelings about how terrible someone is who doesn’t want to try new things while complaining and ruining everything you want to enjoy. Sloth or laziness that is totally arrogant about how it’s effecting other people’s lives. A mindset that is focused on getting more for itself while arrogantly refusing to let go of any negativity at all. Lazy jealous people in your life playing the victim role who interfere with your happiness.