A heraldic helmet is a decorative steel or rune full helm. Players can paint them on a pluming stand, shield easel, or banner easel in a player-owned house if they have level 38 Crafting or higher and have been assigned a crest by Sir Renitee in the White Knights' Castle. Sir Renitee will not assign a crest unless the player has level 16 Construction or above. A player's first crest assignment is free, and it costs 5k to change their crest to another one. It should be noted that some crests have other requirements; such requirements are detailed below. Players can use a pluming stand in another player's house if they do not have one in theirs. The helmets have exactly the same stats as their regular counterparts. They are untradeable and the paint cannot be removed.
At one point, the Varrock helm and the gilded full helm were almost identical as the Varrock helm used to have a light gold feather instead of a black one.
The examine information of the horse heraldic helmet is in reference to a running joke in in which horses are said not to exist. This gag started with the 2004 April Fools event.
After the 6 March 2012 armour updates, the helmets retained the same appearance as before the update, despite them just being painted steel or rune helmets. They were updated to match the other variants on 11 January2016.
The 'Skull' crest originally required the player to be skulled when talking to Sir Renitee to receive. This requirement was removed with the Evolution of Combat. However, since the introduction of Legacy Mode, becoming skulled once again returns, and once again the 'Skull' crest requires the player to be skulled.