Eleazar was a technician employed by the Unknown and worked at Unknown. To pass the periods of boredom between work shifts. El's wife Martha sent him a copy of a popular self help book, Star Signals. El readily took to the book and studied it intensely. Soon after sending it, his wife implored him to stop reading the book, as she was hearing many strange circumstances surrounding it, as detailed in the couple's correspondence in El's Tablet. However, he persisted, somewhere along the way he started to lose his mind, and was subsequently treated by Dr. Knope.
Eleazar seems to have attracted someone's interest and has became a test subject of a strange substance, which has led to him being injected with the substance, hooked up to electrodes, and eventually decapitated.