They're a keen mix of people;
The 'Concerned' Mother
A poster that roleplays as a mother, normally seen making posts about how they're worried the "Toxic incel mindset" will literally rape her daughter or is looking for advice on how to stop her son from becoming Hitler. These people are the 'This is what my 5 year old thinks of Trump!' posters of the Cucktears world. These people are probably the most obvious actors on the site as any real mother has bigger concerns facing her children that a handful of mean comments on a website virtually no one knows exists.
The FBI Informant
A poster that has somehow managed to convince Cucktears members that he's basically Special Forces and the FBI personally investigate the incel community at his behest. This poster can most commonly be seen humble bragging about all the times he's filed 'reports' to the FBI on a comment an incel has made, he also assures people that these 'reports' have landed multiple incels in prison, despite the fact he'd never have access to such information.
The Armchair Lawyer
This poster is normally identified by announcing to people how LITERALLY everything an incel has said is breaking a law. These people are normally seen posting on 'what-if' style threads. These people have convinced themselves the Morally Right = Legally Right and as such will generally work hand-in-hand with the FBI Informant, both feeding into each others ego.
The Ex-Incel
Can be identified by his "I used to be an incel but..." style posts that generally just include some platitude like "...I started being myself!", These people are failed normies that have had sex a handful of times or are currently dating some vile landwhale and are now attempting to distance themselves from the incel ideology as much as possible. These people can also just be incels in denial that are still convinced that they stand a chance if they just buy the latest fashion or smile more.
The Assblasted Roastie
A very rare breed, a genuine female. She spends her time making smug comments or nonchalantly mocking any incel screencap without addressing the substance (If this was posted she'd be the one making a smug remark about how she's "On the list! Yay!") to cover up for the fact she's eternally flustered about us existing.
The 'Female'
This is just a guy roleplaying as a sexual fetish. Never really contributes anything to any thread rather than make odd remarks about his vagina in hopes that a female will respond to him, not knowing that its just another man doing the same thing.
The Infiltrator
The poster that genuinely thinks he's fighting in some kind of righteous meme war and takes all of this super seriously. This is the person that claims to have been in incel communities 'undercover' and honestly thinks he's a big deal on Reddit because he posts 16 hours a day. This person unironically thinks other members look up to him.
The CherryPicker
A very simple poster. Just goes out of his way to find only the most aggressive or threatening incel posts in order to prove a point. Normally seen confusing humour for genuine opinion and taking everything literally (possibly due to autism).