That's right: From June 3 to July 2, there'll be a post each day highlighting Teenage Mutant Ninja Turtles canon immigrants. Now, because TMNT canon is a little confusing, it can be hard to tell what counts as a canon immigrant and what doesn't. So for the purposes of this blog, a TMNT canon immigrant is anything (a) from the movies, cartoons, video games, toy lines, or tie-in comic series that later appeared in (b) TMNT volumes 1, 2, or 4 [because they're by the original creators] or TMNT volume 5 [because the original creators are involved, it's the new official continuity, and its goal is to use as much of the diverse TMNT lore as possible].
The Street Phantoms are a street gang in the future that first appeared in the Fast Forward episode "Future Shellshock" (July 2006). They get their name from cloaks that let them turn invisible, and they're led by a cyborg called Jammerhead.
This is pretty much the exact situation they're in when they appear in Teenage Mutant Ninja Turtles #51 (October 2015), only this time they're in the present, Jammerhead is just "Jammer", and they ultimately work for Darius Dun.