Change My Mind

Wait I want an actual thought-out theory about this

They both wear orange jumpsuits/vests, their initials begin with V, they both wear glasses, etc.

Plus, they're both villains and use their inventions for evil purposes.

And Chester might be an aged Vector.

But like what's the story, like how did he go from a goofy thief to a granola bar maker?

And why the name change

Maybe after Vector's evil plans failed, he decided to chase a new career. To avoid being identified by his villain name, he changed from Vector to Chester.