I see so much of "is post-crisis Robin Jason an innocent little sweetie-pie or a mean aggro delinquent" and after reading through all of his batman and detective comic issues post-crisis I think i can safely say he's... an introverted and distrustful, but altogether friendly teen boy who has convinced himself to the deepest level that he is an Adult Man, and also does not hold a particularly good view of adults.
The sweet little babypie characterization falls a little short (assuming we aren't being too silly with it, there's plenty of that in the comedy issues of tec) because it disregards the part where he's a jaded teenager who is constantly going off and trying to take care of his own problems like "his own man" and reacts negatively to any breach of trust or move to take care of him. But negative doesn't mean "violent and rageful." The delinquent angle is incorrect because not only is his disposition peppy, silly, and agreeable most of the time, but assuming the problem upsetting him isn't a predator or the guy who killed his dad (and three out of four canon instances it is a predator to be clear) he reacts to emotional turmoil with Bruce by bedrotting, sulking, communicating through notes, and overall being avoidant. The only times he lashes out are when Bruce is calling him out or after Bruce told him to his face that he chose to look for the Joker over looking for him, and that case of "lashing out" is just getting a little snarky.