LOL don't take this too seriously, it's just a guess XD

I'll put the main characters from oldest to youngest :)

Normal font for UglyDolls, Italic for Perfect Dolls.

All ages are counted in human years.

Mayor OX, 38
Range- (30-40)

Wage, 35
Range- (30-40)

Ugly Dog, 29
Range-  (28-35)

Babo, 27
Range- (25-32)

Lou, 22
Range- (20-25)

Mandy, 22
Range- (19-25)

Moxy, 21
Range- (19-25)

Lucky Bat, 20
Range- (19-25)

Now for some others:

Tray, 28
Range- (27-32)

Ice Bat, 26
Range- (25-30)

Wedgehead, 19
Range- (18-22)

Gibberish Cat, 23
Range- (20-25)

Big Toe, 28
Range- (23-30)

Jeero, 29
Range- (23-30)

Basheeshee, 26
Range- (25-30)

Ninja Batty Shogun, 25
Range- (25-30)

Moxy (OX's younger sister), 29
Range- (28-35)

Tuesday, 20
Range- (20-25)

Nolan, 21
Range- (20-25)

Babo's Bird, 19
Range- (18-22)

XD that's all I could think of XD
What do you readers think XD