Cruel. Evil. Heartless. Unkind. Ruthless. Obnoxious. Loud. He could go on for hours, humans were not his favourite species, not even close. To their credit they are persistent he'll give them that. He wouldn't say he hates all humans though, that would be unfair on his part, he just hates the ones that bully and torment others for their own personal gain.

Phantom is different. Poindexter doesn't think he counts as a human anymore, after all he does have a core and that is a staple of being one of the undead. Just because he can hide his true self it doesn't change the fact he died. The humans he met while in the halfas body were.. unique to say the least but the halfa himself was the most confusing, at first he thought he was the bully but that was far from the truth as he were to find out. It still doesn't excuse what he did in Poindexters eyes but he understands the temptation and doesn't hold it against the halfa so long as he doesn't make the same mistake.

Dash baxter, looking back he can't believe he thought he was a victim, the misunderstanding certainly seems ridiculous now, however it did help make his afterlife easier as now he's respected among his classmates, so there's that. Dash was a typical bully as it seems, Phantom babbled on about giving him more time to grow and understand that. Something about a bad home life but Sidney doesn't care, that's no reason to bully others.

After Danny broke the portal he used to watch over Casper High he hasn't been keeping up with what's been going on besides what the halfa and other ghosts tell him, which isn't much. He still believes humans can be good, key word is can, it also means some can be bad.

Humans... are humans. Ghosts are ghosts. Sidney doesn't believe one is inherently bad or good but he does believe humans have more or a reason to be bad, ghosts don't care about those things, most want to be left alone. They don't do cruel things to fit in because there's nothing to gain from being horrible to their own kind, the humans are cruel enough. He would love to get to know more humans if he could, he's thought about bringing it up to Phantom on a few occasions. Sam and Tucker were a good place to start after all he'd met them before and they seem nice enough.

Phantoms parents were another thing.. he doesn't know what to think about them, they hurt a lot of people and ghosts but they seem to think they are doing good, stupid mindless. They are the kind he hates, heedless humans.

Vlad. He can't put him in with them, after all he did technically die but he's the prime example of just how evil and manipulative they can be. Leeching every ounce of kindness they are shown, taking control over the weak minded. It disgusts him.

Humans are complicated, that's his final answer, just like ghosts or animals. Not good or evil, just there. Some doing there best while others don't.