Ironman

Ironman is a Profile type where the user cannot directly interact with players. This includes Trading, the Auction House, the Bazaar, receiving Gifts, or picking up player drops. Normal profiles cannot pick up an Ironman's drops either, however they can gift gifts.

Ironman profiles are much harder to play on, not having access to the auction house and bazaar. Most everything that you would use them for is hindered, so you have to grind everything yourself. For most players, ironman profiles might get boring after a while, because the mid-lategame experience is so much longer, but it's a great option for veterans who have everything in the game on another profile.

You can create as many iron-man profiles as you want, but cannot change a profile to an iron-man profile after is has been created as a regular profile. Iron-man coops can be created as coops, and coops share collections as normally. The only change in iron-man profiles is that the player, as stated above, cannot use the Auction House, Bazaar, cannot pick up items or get gifted, but can give others gifts as long as they are on a vanilla profile.

Trivia

 * The name and limitations of the profile are a reference to Old-School Runescape.