Honkai: Star Rail has a large cast of characters, and while everyone can learn more about the main character's backstory, a lot of details are left out. If you're interested in the ages and heights of the characters, and since there's little official information to go around, check out the list below!
Beginner's Guide to EARLY GAME PROGRESS in Honkai: Star Rail
The Data Bank is the main source of character information in Honkai: Star Rail, but it lacks detailed information on certain characters in the game. To help you figure some of them out, here are some height comparison charts we used:
Related: All Honkai Star Rail Planets
While there is no concrete info on any of these characters, players are free to guess at certain aspects of those aspects, including ages. For example, most of the main cast are young adults, including Dan Heng, March 7th, and the main Trailblazer.