Should I convert these turtles to Communism as well?

Let me think abo-no.

Absolutely. The more minions the merrier!

We don't need to make them minions. In fact, I doubt very much it's possible to make them our minions.

I'm sure that so long as we can convince them that we're friendly, they'll quickly become our allies.

Working on it, yo.

Likewise. Between the two of us, one of should be able to say what needs to be said to avoid making enemies out of them.

I am not sure what I should do here :-/

Do I have Wart's cape?

You could look and see what the area is like around us. Whether we're in the sewers, an alleyway, a technodrome tunnel...

Looks like we are on a street...we were in the trunk of a van

I'll ask them whats up with the growling. (Intelligence)

I will use my minimalist attribute!

JK should tempt them with a delicious pizza.

I'm guessing that was probably the engine of the van.

I heartily endorse this idea and/or plan of action.

Well, I was going to attempt to appraise the damage we did to the van with Donnie Boy there, but this seems more suited to my idiom.

I will use Brains + Knowledge Cooking to inquire if they would like pizza, and of what particular style? Seeing that this is NYC, they'd probably go most for a nice, floppy NY Style Pizza, but then, they might not have tried the Meaty Goodness of a Chicago Style, the thick and chewy Detroit Style, the thin, garlicy and clammy New Haven Style or the...um...unique St. Louis Style.