A main can be considered the "main" toon on that account. Someone saying I play all "mains" means they are playing the main toon from each account. Its easy to figure it out based on context Someone saying they play all mains when boxing means they are playing the main toons from each account (usually meaning the most developed toon on each account. And no they aren't a for telling you that they are just giving you more info. Someone saying they are playing four mains usually means they are playing the main toon on each account that gets most of the care and attention. A is someone calling someone a in this situation (which includes me since I am passing the title onward I guess). I mean it was easy to figure out what "I play only mains" or what not meant so yeah. I assume the comment about mains is from a raid guild perspective. In casual guilds its much less of a big deal. An alt is a toon on the account that is not a main. A box is a toon played as a secondary toon to whichever toon the person considers their "group main". A bot is an automated toon main or not depending how much automation is being done. For AFK cheaters who run all toons afk even the main is a bot. And when it comes to what a guild considered a main it generally means the one toon that the player has designated their main is in the guild. In my guild one toon is listed in info as their main toon but all we include this for is so that all of a players toons can be sorted under one main name. To us doesn't have to be the toon you play the most as that changes over time for some it it just the toon name we group all your toons under.