actually you get two characters per account per server, but seeing as making an account is so easy and fast most people just have multiple accounts to have more characters. i myself have 3 accounts with 6 characters total (2 per account)

see in wow i played a prot pally and a healing druid and a kick ass rouge soo i like playing from all different varriants is it only one toon per sever or more?

Dark warrior namekians are like tanks, they have tons of LP and great power, you'd be able to plow through stuff easy, as for swordsmen, they excel in speed so landing multiple hits fast isnt a problem. just go with what you like, theres a good amount to choose from :3