Numbuh 1-Love is the leader of the Jamaican Kids Next Door, Sector J. He first appeared in Operation: H.O.L.I.D.A.Y. as the overseer of the other operatives' comfort while they stayed in their tree house. It is known that there are 365 feet of waterslides, about 50 pools, an endless supply of mango smoothies, and wonderful weather - these statistics make Sector J the ideal vacation spot for the KND.
Later, in Operation: I.T., he is seen about to be tagged by Numbuh 44, but threatens hims with a S.P.L.A.N.K.E.R and ends up not being tagged. He also made a brief appearance in Operation: I.N.T.E.R.V.I.E.W.S. where his sector had caught the Wedgiesaurus Rex.
- His code numbuh is a reference to the popular Bob Marley song, 'One Love'.
- It is revealed in Operation: I.N.T.E.R.V.I.E.W.S. that he, and his sector do not wear underwear.
- Numbuh 1-Love was voiced by Keith Ferguson, the same guy who voiced Blooregard Q. Kazoo from Foster's Home for Imaginary Friends.