Though you think Prime would have mentioned them at least once to the other Autobots (Bee aside), it does makes sense he would keep them a secret. The less they discuss (and know, in the event that one of them were captured and Mind Raped by the 'Cons) about the Rescue Bots (who are obviously not Warrior Class bots and much better at saving lives than fighting a war directly (for example, Heatwave's only weapon is an improvised fire hose. Meaning water. May be a whip if he needed it, but primarily slagging water!) and their mission, the less likely they'll be targeted by Decepticons.
Edit: a tinge of Fridge Brilliance if you will, Prime keeping them a secret makes sense. While it would be nice to have a 'Con show up every once in a while, really the The Rescue Bots are not Combat Bots and have no weapons or training to make them capable of defeating one Decepticon, let alone an entire army. They are, however, the best at what they do, which is saving people. The less involved they are with the 'Cons, the less likely they are to get pointlessly slagged when the Autobots really need them for what they're good at. Because, really, though some extra fire power would be nice for Prime and his team, they really don't need more soldiers as much as good relations with the humans (whose planet they've brought a war to), particularly humans with much more advanced technology than the rest of the world. Where transforming, talking giant robots are a curiosity at best. Like, say, Griffin Island perhaps? If these humans can get used to them and eventually accept them as allies, they will ultimately be able to provide the Autobots with the backup they so desperately need and, assuming the war ends with the Autobots as the winners, a sanctuary for the survivors where they can live in peace amongst humanity and even get assistance in locating and mining energon. It was actually quite a pragmatic and strategic move on Prime's part when you think about it.
Where has it been said that it's in the "Prime" continuity. As far as I can see, this show is it's own continuity, with slightly "chibi-fied" (for lack of a better phrase) Transformers characters instead of the full-sized ones from Prime. Even Optimus is portrayed as "chibi-fied" in his appearances.
The creators of the show confirmed "Prime" and "Rescue Bots" both take place in the same universe. I imagine that if the Rescue bots ever appear in the "Prime" series, they will be given new looks to fit in on the show.
Why is it that after Trex was repaired and repurposed, does he still have damaged skin. Shouldn't that have been repaired too?
Which would be scarier to a potential burglar: a dinosaur, or a dinosauroid Terminator?
Who would be dumb enough to rob Doc Greene? Unless you're specificlly after high technology like Doctor Morrocco was, there's definitely safer places to loot, with less chance of said loot being more trouble than it's worth even if you do manage to get away with it.
I know the whole robot in disguise thing is because the people wouldn't be able to accept aliens but why don't they just handwave it by saying that the rescue bots have AI or something?
Media. If you tell people the bots can think for themselves the first thing people are going to think of is all the robot apocylpse movies they've seen over the years. Think The Matrix or Terminator series. A robot on a leash sounds much safer then a robot that can one day decide it doesn't want to serve you anymore.
In the comic, when Blades lements that his vehicle mode flies when he is afraid of heights, Chase says he is a good pilot and would have liked a flying altmode. Why didn't they just switch? It's not that difficult for Cybertronians to change their alternate modes. In Transformers Prime, Airachnid did it just by scanning a new one. Why did they stay the same when they both would have been happier switching?
How does Chase arrest people? Police cars have caged backseats for criminals, but Chase doesn't seem to have a backseat at all. Where does Chief Burns put them? Especially in Small Blessings when he has to arrest TWO people. Even if he put them in the front seat with him, how did he fit two of them?
Chase does have a backseat. Frankie rides in it in one episode. It's small but it is there.