Dewsbury-Hall arrived in the summer from Chelsea just as Grealish was joining on-loan from Manchester City.
The pair have shone this season and Dewsbury-Hall told Everton media: “He is a great lad. I have known Jack for a number of years, through mutual friends and stuff.
"He's obviously a fantastic player. Everyone can see that. But he's actually a really, really nice lad. He is such a humble, down to earth lad. I don't know whether he is portrayed like that in the media, but when you get to know him he gives everybody the time of day, so that to me shows how you are as a person.”
Dewsbury-Hall admits Grealish's profile has helped him go under the radar, explaining: “Jack's almost like a celebrity, he's not just a football player - he's a very famous person. I don't mind it at all.
"As long as I'm playing well and he's playing well and we're both happy, I don't mind who gets the limelight. He likes it, so I'll let him continue to take it as much as he wants.”