Steel titan

Steel titans are level 99 Summoning familiars, introduced with the "Summoning 2" update on the 31 March 2008. It is currently the most powerful familiar and, with 7540 Life Points, it is in sixth place for the highest life points of any creature in RuneScape after the Corporeal Beast with 20,000 first, Nomad with 12,500 as second and the Avatar of Creation, the Avatar of Destruction, and the Decaying Avatar in Nomad's Requiem all tie for third with 10,000.

While a Steel Titan is summoned, the summoner will have a 15% stab, slash and crush defence bonus boost. This boost will show on the Equipment Stats screen.

The Steel Titan has 4 methods of attacking: magic, ranged, melee and special attack (scroll). Unless the special attack is repeatedly used by the summoner, the Steel Titan will only focus on ranged and melee attacks. When the Steel Titan performs a ranged attack, it will put its left hand by its mouth and blow the ranged attack at the player/monster it is attacking. For the melee attack, it will put its hands together and pound on the ground; this attack can also hit diagonally. Periodically, the Steel Titan will perform a magic attack, in which it will hit both its hands together in front of itself and a magic attack will fly forth. If you are being attacked by multiple monsters/players, the magic attack may not always go to the monster/player that you are fighting, but rather a random one that is attacking you. Unlike the melee and ranged attack, the magic attack will not do damage right away but will wait one cycle of attacking, in respect to the steel titan, to do the damage. If the Steel Titan performs a melee or ranged attack after the magic attack, it will appear that it is hitting twice at once because of the delayed magic attack.

Steel titan pouch
Steel titan pouch is made by using a Summoning pouch on a Summoning obelisk with 178 spirit shards, a Crimson charm and a steel platebody in the inventory. Making the pouch earns 435.2 experience points. Using the pouch to summon a Steel titan gains 4.9 experience points, and costs 10 Summoning points.

Steel of legends scroll
Steel of legends scroll enables the use of the Steel of Legends special move for a Steel titan. Using the pouch on a Summoning obelisk creates 10 scrolls.

Steel of Legends
Steel of Legends is the special move for the steel titan, which inflicts four ranged OR melee attacks (depending on distance from target) instead of one in the next attack. This attack may be used up to five times in a row with the required number of scrolls. Note that either with a ranged or melee attack, the titan will give the summoner ranged experience.

Trivia

 * Other than the Dragon claws, no other item or familiar allows to show four damage splashes at once on one enemy.
 * Assuming all four hit splats are guaranteed to hit, the chance of hitting 972 damage (four 243s) is 1 in 3,486,784,401. It is even rarer than said, but that is based on the chance to hit, which varies.
 * When the larger health bar came out the Steel Titan's health bar didn't change. This may be because of it being a summoning familiar and not an actual monster.
 * In one of the conversations, the Player states that he/she doesn't want to die and is quite happy picking Flax and turning unstrung bows to gold, which is a reference to new players that high alchemy unstrung bows.
 * There is currently a bug with the Steel Titan charging its attacks. If ordered to 'Attack' a player, the Steel Titan will walk up to them and use a single melee strike even if a scroll has been casted or the target is far away. The Attack order works correctly against monsters and other Summoning familiars, though.
 * The examine description of the Steel Titan might be a reference to "Kronos" a Greek myth and King of the Titans.