Name Changes:

Goku was changed to Zero
Bulma was changed to Lena
Pilaf was changed to Oculi
Turtle was changed to Tortoise
Oolong was changed to Mao Mao
Pocawatha was changed to Pochawompa
Yamcha was changed to Zedaki
Puar was changed to Squeaker
Pansy was changed to Penny
Kuririn was changed to Bongo
Lunch was changed to Marilynn
Tenshinhan was changed to Shinto
Upa was changed to Littlefoot
Karin was changed to Whiskers the Wonder Cat
Grandpa Gohan was changed to Tendor the Great
Bongo was changed to Mayor Domo
Pasta was changed to Aldevia
Crane Hermit was changed to Lord Wu Zu
Taopaipai was changed to General Tao Pei
Sergeant Metallic was changed to Major Fist
Shenron was changed to Dragon God
Chiaotzu was changed to Chaozu
Mai was changed to Femina
Penguin Village was changed to Happy Valley in Dragon Ball: Mystical Adventure, but was still called Penguin Village in their dub of Dr. Slump.
Senbei Norimaki was only referred to as his nickname Dr. Slump
Akane was changed to Sandy
Taro was changed to Butch
Peasuke was changed to Buddy
Aoi was changed to Lois
Midori Yamabuki was changed to Tammy Lafox

I suppose it's technically both, if we're allowing name changes that don't apply to any other dub and aren't cannon.