One Defence accounts are most likely the most common of Pure characters. They are intended to be killing machines in Player vs. Player combat. As Defence skill is not as vital in PvP as it's in PvE, players usually skip leveling it, leaving it on the very first level. By doing this, they will achieve a very reduced Combat Level while preserving high damage output. Those who want to OSRS gold challenge them usually will not anticipate quite high hits in the low-level sufferer.
Most players who go this course use their Pures just for player killing purposes rather than for regular gameplay because playing with one Defence, and Low Prayer levels almost exclude their ability to perform high-level PvM content.
Defence Pure. Don't get confused with this one - it is the precise reverse of a single Defence Pure. It's also an account that has a non-CombatlevellingDefenceStat, but in this circumstance, the owner decides to maximize Defence Skill at the cost of other attributes. Defense pures were very popular back in the day since they used Dragonfire Shield's special attack along with venom damage stacks that come from Serpentine Helm to deal damage. Users were quite secure as they had elevated quality and Hitpoint levels. While this method is no longer viable, the Defence Pures are less hot as they were.
Maulers. Maulers, also referred to Cheap RS gold as Obsidian Pure, do use Tzhaar-ket-om weapon to defeat their opponents. By going this route, they manage to achieve even lower Combat Level than One Defence Pure.