Both systems are legacies of Soviet-era industry. The logo of the Ulan Bator Metro is a letter “M” superimposed over a camel’s humps. Pictures of the stations remind me faintly of the Baltimore Metro. Stations appear to have been named for cosmonauts and yurts.
Update: It’s come to my attention that the “Ulan Bator Metro” site is a joke. And if I’d just waited for the images to load, I’d have seen the satire, plain as day. Heh heh.