A redpill is a fictional character from the Matrix franchise/universe that is aware of the true nature of the Matrix itself. A redpill is typically a human, both male and female who was born within the Matrix where his/her body and mind has been freed from the power plant by Zion hovercraft teams after encountering anomalies or glitches in the system of the Matrix's virtual reality where he/she is eventually found by other redpills who offers him/her freedom by giving him/her the choice of taking either a blue pill or red pill while choosing the latter, freeing him/her from physical bonds by exceeding human limitations inside the Matrix.
A redpill can either become a member of a crew when a position is available and is trained to become a Zion operative or can find a place in Zion. A redpill often adopts an alternative single-word alias based on individual preference, which can refer to anything, often associated with philosophy, mythology, religion, nature, literature, culture, technology, and computer science.
Redpills are the only humans out of Zion's inhabitants can reenter the Matrix, as they have a headjack that allows their minds to be retransmitted back into the Matrix's broadcast network, whereas upon his/her return, a redpill's awareness of the virtual reality allows him/her to bend the Matrix's rules and exceed normal physical limitations, which requires training before it can be perfected.