Lucas Launcelot Garner is a fictional character in Larry Niven's Known Space Universe.
Born in 1939, he lived well into the 22nd century. This was because advances in medical science kept pushing his life expectancy ahead of his age. He spent the last few decades of his life confined to a travel chair because medicine could replace every part of his body except his nervous system (which was slowly dying, from the legs up, of old age).
Despite being over 160 years old, he made at least two trips into space in the early 22nd century. The first trip was to the outer solar system in pursuit of Kzanol the thrint, after the latter was inadvertently released from stasis. The second trip was to the planet Mars in pursuit of Phssthpok, the Pak who had abducted Belter Jack Brennan.
He is friends with Belters Lit Shaeffer and Nick Sohl, both of whom served as First Speaker of The Belt on separate occasions.
He served as a member of the ARM for over a century, first as an operative and later as a supervisor. Immediately prior to his retirement, he was Gil Hamilton's boss.
Garner is featured in the following novels:
and in the short story:
He also plays a lesser role in the Gil Hamilton stories:
with a cameo appearance in: