Mental Powerhouse
Mental Powerhouse (n, adj.); A descriptive used in slang of counterculture to describe a burnout, or individual who makes use of unrealistic mentalist descriptive traits. Also describes a self-inflated opinion of ones own mental ability to influence others or situations. A failure to understand the physical nature of the real world.
He/she, is a Mental Powerhouse. There are too many Mental Powerhouses among the group.