Psionics involve the use of the mind to alter or command reality, typically through some understanding of a deeper truth about the universe or command over a fundamental law of reality.
It’s pretty cool, but I have trouble thinking of media where it takes a prominent role. The few examples that come to mind are:
Star Wars - The Force Mass Effect - Biotics/Element Zero technology Stellaris - Spiritualist Ethos Warhammer 40k - Psykers/Orks
What are some other examples of psionics in Sci-Fi?
The Foundation book series doesn’t really start into psychic stuff until the second book, Foundation and Empire, with the Mule. Big turning point of the overall plot because of him. I wouldn’t classify the Second Foundation as psychics as much as having the ability to predict patterns mathematically and socially influence populations. The fourth book gets into some other psychic influencers.
I’m okay with the TV show parts I’ve seen, but it is vastly different in its approach (and so more psychic type things going on). I knew a visual version would have to take a lot of liberties as the books just don’t translate well in the way they’re written.