Why did Krang team up with the Shredder in the first place?

[neatoman]

Yeah yeah, I know. "Bwuild mwe a bwaaaaawdy, Saaaaki!*burping noises*".

But why him in particular? He's a wannabe warlord who's itching for the opportunity to overthrow Krang as soon as possible, he's simply not trustworthy in the least. There's also the fact that Shredder, the guy who presumably spent his entire life dedicated to martial arts training, even has the skills to build a robotic body like that. When did he even have time to study advanced engineering? Even if he did find the time, it's doubtful he'd be anywhere number one in the field, or even above mediocre.

It kind of seems like Krang should have gone with someone who:

1. Does not have such an obvious personal agenda.
2. Is primarily skilled as an engineer to build the body and not martial arts and/or tactics.

And then you remember that Baxter Stockman was part of this show almost from the beginning and that really hammers home how strange this choice was.

Maybe it was for the best that subsequent iterations of Krang were instead made Shredder's enemy rather than ally...