This is the original Japanese cartoon with new english dubbing. These cartoons contain the original cartoon footage, not the version shown as "Battle of the Planets" in the UK, which featured 7-Zark-7 and 1-Rover-1 to protect UK children from some quite extreme violence. And yes the characters do have different names. And no, there's no Keyop.
This is a remake of the original cartoon, not the original version. The names of the characters have changed, Ken now leads the group, Joe replaces Jason, Rocky instead of Tiny, June rather than Princess and Keyop has been replaced with a fully conversant small guy. Even the bad guy Zoltar has changed to Solaris. The DVD contains three episodes forming a single storyline. The animation isn't the best I've ever seen, and compares badly to modern anime such as Cowboy Bebop. I bought this as a bit of a nostalgic trip back to my youth and found it wasn't what I thought it was. If you're expecting the original Gatchaman, or Battle of the Planets or G-Force, this isn't it. But if you like the style of the original cartoons, the action and the uniforms then you'll probably like this, but maybe not as much.