He is able to separate between people who tends to do bad things from people with good intensions, and this apparently only by sheer looking at them.

This power of his mind is mentioned somewhere in the mangas, but I think there are some scenes shown too in the 80's anime where Astro's using his 6th sense, ie. in the ep
'Astro Fights Aliens'. Here Astro answers to Ltd. Blackstone: "Well, my sixth sense tells me that Ltd. Nelson was right".
I can imagine there might be some other episodes (60's, 80's, 03's) in which Astro's taking use for his mind power, but I don't know for sure.
If anyone else here in this forum knows about other scenes in relation to Astro's 6th sense you are welcome to mention them

Another thing makes me wondering when I consider about Astro's 6th sense:
Supposing Astro just spotted a man on the street on whom Astro's 6th sense reacts with the message 'this guy is evil'. What is he supposed to do? Neither can Astro keep observing that man every minute since Astro's got plenty of other things to do, nor can he go to the police without any proof of a possible crime, he only would get a scolding by Inspector Gumshoe/Tawashi

However, Astro just knows this man on the street is going to do a crime but without any evidence there's nothing he can do.
Our little hero sees himself now confronted with sort of a 'Cassandra Complex', a term commonly used for knowing what will happen in the future but without any ability of changing the course of the predicted events.
Astro simply has to wait for the crime's going to happen until he can react with his physical powers.
In a world such like in 'Minority Report', his 6th sense would be a great help to prevent crimes, but in the Astroboy world his special mind power only helps him to handle human relations.
Sometimes it isn't easy at all for Astro to deal with his superior abilities
