As of the third season he has had a chip implanted in his brain. Removing the chip would kill him. This chip can be used to upload skills and information into his brain. It can also be used to suppress memories and his original personality.
A technopath is able to access his mind/operating system (https://arrow.fandom.com/wiki/Baron) via his brain chip. There's another character with mind control powers who is unable to make Khalil do anything because too much of his nervous system is cybernetic.
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As of the third season he has had a chip implanted in his brain. Removing the chip would kill him. This chip can be used to upload skills and information into his brain. It can also be used to suppress memories and his original personality.
A technopath is able to access his mind/operating system (https://arrow.fandom.com/wiki/Baron) via his brain chip. There's another character with mind control powers who is unable to make Khalil do anything because too much of his nervous system is cybernetic.