Pretty simple question (I think), probably stemming from my lack of formal background in physics.
I've been reading questions like this one related to attraction with respect to spin (a term I'm not familiar with but have a basic understanding of thanks to this reading), and have become curious about something. Are anti-particles still spin-2? I would think that the reversal of their physical state would reverse pretty much all of their other properties as well, like giving them negative mass, yet they still appear to "seek out" normal matter through some form of attraction, or at the very least their net force doesn't repel normal matter. Is that because of gravity (in which case they must be spin-2 and not have negative mass)? Or is there another explanation for this? Or does my physics noob-ish-ness have me completely turned around and barking up the wrong tree entirely?
Edit: The linked question explains that mediators governed by an even-spin field will attract when their charges are similar, and repel when they are dissimilar, while mediators governed by an odd-spin field will do the opposite (as in electromagnetism).