She is a symbiote, eats brains, is very aggressive, but sweet. Like its fellow siblings, Lasher was a very violent symbiote due to being still immature after it was extracted by the Life Foundation, so much so that its first host seeked help along with the others to control herself and do good with the symbiote. Due to its weakened state after being separated from its host who was killed by Scream, taking part on multiple painful experiments on the Vault and from fear of being alone.