Psionic power is one of the least understood forces in the cosmos for how ancient it is thought to be. Unlike divine magic, which is ordained from above, or arcane magic, which is easily reproducible with gestures and words, psionics are an intensely personal power which cannot be easily taught to another through speech, writing, or art.
Ego Harnessing
While the id is the most basic power of the mind, it is the ego which tames the beast within us all. And no one understands the raw potential of both id and ego like the Esper. Their metacognitive studies, considering how and why they think, allow them to dig deeply into the structure and potential of thought itself. Weaponizing this potential is what allows them to take on the role of the adventurer.
Power from Within
Unlike the power of a Wizard or a Cleric, the Esper’s power comes from within more like the Adept or Sorcerer. But while the Sorcerer relies on merely shaping the raw power that they have been gifted, the Esper creates dense mental constructions and formulations of thought or emotion in order to manifest their power in a manner similar to the study and care of the Wizard. This, however, does not preclude the existence of Wild Talents, people who arrive at the same or similar conclusions as the well trained Esper.
Creating an Esper
Personality is perhaps the most important aspect of an Esper, as all things flow from who they are at their core. Those who are exuberant and delightful tend to avoid using powers in ways to create sadness, and those filled with quiet rage are more likely to use their powers in violent outbursts. Quiet and contemplative Espers may gravitate toward telepathic and empathic disciplines, but there are no guarantees or limits to how one’s personality shapes their power. Consider your character’s history with psionic power during character creation. Is it something they’ve recently unlocked as they approach (or progress) through adulthood? Was your character a wild talent practically born with psionic gifts and how did that shape their childhood? Does their culture consider psionics to be natural, abnormal, or something obscene or even heretical?