Personality:
Elizabeth was an aristocrat in Rapture and actively taught in one of the primary schools, she was well-liked if at times considered little harsh. Although outside of this she was addicted to plasmids. Her fate may have been different if it was not for being noticed and chosen for the Big Sister project, she was not the first nor the last, but somehow maybe due to plasmids she was injecting into herself outside school hours, she kept some of her kindness and generosity when she was changed forever into guardian of the Little Sisters. She is at times volatile but has a caring compassionate side despite her dark and terrifying appearance.

History:
Before New Years 1958, Elizabeth was a teacher until they changed her, during that time she subscribed to teachings of Sofia Lamb, finding her philosophy more realistic than the so-called pretension or idealistic bullshit, Andrew Ryan would have them believe.

Skills:
Stab: A Big Sister's basic attack. When at melee range, she will jab her ADAM syringe into the player, dealing a high amount of damage.

Charge: When at a distance from the player, a Big Sister will run towards Delta at a high speed, dealing minor damage and minor knockback, as well as temporarily disorienting the player.
Fire Barrage: Occasionally, a Big Sister will fire three large exploding fireballs in quick succession, dealing high damage.

Telekinetic Pummel: Occasionally, a Big Sister will use an advanced form of Telekinesis to lift every nearby object around them, pull them towards her and fire them at the player, with the amount of damage depending on the size of the object. If the object is large enough, it will push the player back, temporarily disorienting them.

Drain: When low on health, Big Sisters will run towards a wandering Splicer, impale them with their ADAM syringe and drain their health. This gradually recharges the Big Sister's health, but leaves her vulnerable. Attacking her while she is draining a Splicer will cause her to drop her victim, killing the latter in the process.

Teleport: Big Sisters possess a unique version of the Teleportation Plasmid used by Houdini Splicers. The energy ripple seen when they disappear is purple as opposed to red, and they can teleport much farther. They are seen using this ability in a handful of scripted situations throughout the game, and they may also use it to reach the player from a distance during battle.