Minor characters in Kim's network. They typically play no other prominent role besides bringing Kim to her destinations. As of Season 4, the use of rides has dwindled due to Kim now having her own vehicle, but they're still in use for when the car's incapacitated.
Baxter – In Mind Games, he let Kim and Ron ride two of his donkeys down into the Grand Canyon in return for Kim performing an emergency delivery for his donkey, Buttercup (in the dark, in the rain, and during a mudslide). He was voiced by Dan Castellaneta.
Bernice – She gave Kim a ride in Naked Genius for saving her town from a leaking dam. She gave Kim another ride in Team Impossible. She apparently has started working with jets since then. She's voiced by Nancy Cartwright, who also does the voice of Rufus.
Captain Louis – Captain Louis gave Ron a ride to Dr. Drakken's base in the episode A Very Possible Christmas. This episode reveals that Kim saved his boat from sinking, but that Ron exacerbated the trouble by busting the radio and using the navigational chart as a napkin. Fortunately, Louis couldn't remember Ron's full name, nor especially what he looked like. He was voiced by John DiMaggio, who also voiced Drakken and Motor Ed.
Dallas – He gave Kim a lift to Mount Middleton in Attack of the Killer Bebes after aiding him during a car chase.
Mr. Geminini – He worked for Doctor Bortle. He gave Kim, Ron, and the tweebs a ride to Bortle's lab in The Twin Factor. He's a twin too, but his brother's in prison. He was voiced by Dan Castellaneta.
Gustavo – Gustavo gave Kim and Ron a ride in his plane in Tick-Tick-Tick for saving his village from a flood (which is hinted that Ron was the cause of).
Heinrich – He gave Kim a ride in Crush after saving his village from an avalanche that Ron accidentally caused. He made a reappearance in Team Impossible.
He's voiced by John DiMaggio, who also voiced Drakken and Motor Ed.
Joe – Helicopter pilot who gave Kim & Ron a ride to the Bebe's hive island off the Gulf Coast of Florida in Queen Bebe. Since Kim's wearing a pair of super-speed shoes during the ride, time moves so slow for her that we never find out what favor she carried out in exchange for his ride.
Judd – A camera man who gave Kim a ride to the Seniors' island in the episode "Oh Boyz". Kim had rescued Judd from a rhino stampede earlier, while he was filming a program entitled "Teasing Wild Animals."
Mr. Magnifico – In Bonding, Mr. Magnifico and his circus company gave Kim a ride to a "top secret research facility" on their train. This was in return for Kim acting as a substitute high-wire acrobat after the original acrobat twisted her ankle.
Mrs. Mahoney – Mrs. Mahoney gave Kim her first ride ever for a mission, as seen in A Sitch in Time in payment for saving her cat.
Mr. Parker – In Bueno Nacho, Mr. Parker flew Kim to Wisconsin in his crop duster after she saved his business by going organic, allowing her to paradrop onto the world's biggest cheese wheel.
Ricardo – In Gorilla Fist, Ricardo gave Kim a ride to South America in his plane for saving his chicken farm from a mudslide. Presumably, she dried up the mud with her cordless hair dryer.
Unnamed Marine Colonel – He gave Kim a ride to Cambodia in a military transport plane in Monkey Fist Strikes after she tipped him off to an assault that was due to take place.