Wormwood ( Invasion of the Bane ) Mrs Wormwood was the lead Bane , second only to the Bane Mother , in the invasion of Earth . After her failure and the death of the Bane Mother , the Bane Kindred tried to eat her . She fled the planet and had a price put on her head so that she might be brought back . Like her archenemy , Sarah Jane Smith , she was an intelligent and compelling adversary and viewed Luke Smith as her son too . However , she lacked actual parental understanding and compassion as she was only looking to fill the void left from being cast from the Kindred . Biography . Invading Earth . As Sarah Jane Smith noted , it was said in the Book of Revelation that at the end of the world a star called Wormwood would fall to Earth and poison the water . Taking lead under the Bane Mother , Wormwood headed the Bubble Shock ! factory in Great Britain , disguised as a human by use of an image translator , to spread the Bane DNA through the soft drink to take over the human race and Earth . However 2 % of humans found Bubble Shock ! disgusting , so Wormwood decided to take genetic sample from humans visiting the factory for the Bubble Shock ! tour and compile them into an artificial human called " the Archetype " , later known as Luke Smith . Wormwood was quite confident in her plans and was quite cruel to her brother Bane after he failed to kill Sarah Jane , Maria and Luke , eating him alive . After being contacted by Sarah Jane Smith and threatened , Wormwood activated the traces of Bane in the humans that drank Bubble Shock ! and began the invasion plans by forcing the remaining 2 % of humans to drink Bubble Shock ! . She was confronted by Sarah Jane , Luke and Maria , who used an extraterristrial communicator to overload the Bane Mother ' s senses and cause the Bubble Shock ! factory to begin exploding . Vowing vengeance for the death of her mother and kindred , Wormwood escaped from the explosion via an underground shelter . ( TV : " Invasion of the Bane " ) Exile and partnership with Kaagh . She was blamed for the failure of the invasion and was cast out of the Bane Kindred , who attempted to eat her alive as punishment . She fled and made an alliance with the disgraced Sontaran Commander Kaagh . The pair set out to find one of two halves of Horath ' s identity . Mrs Wormwood kidnapped Gita Chandra at her work to draw Sarah Jane ' s attention and ask for her help in retrieving the other half . Sarah Jane had Mr Smith imprison her with a containment vortex . At the same time that Bane agents arrived , she escaped and re - united with Kaagh . She attempted to get Luke Smith on her side , considering herself to be his real mother , but although Luke showed her sympathy he ultimately refused . Mrs Wormwood and Kaagh opened Horath ' s Portal but Sarah Jane stopped her from becoming Empress of the Galaxy . Kaagh then pulled Wormwood into the Portal and they both fell inside it . Sarah Jane sealed the Portal and then destroyed the device that opened it . ( TV : " Enemy of the Bane r Appearance . While Wormwood was operating Bubble Shock she dressed as an uptight business woman . She wore black with Farley long black earrings . However while she was in exile she wore purple . ( TV : " Invasion of the Bane " ) Operating . While in charge of the Bubble Shock ! factory she was ruthless and if her Bane employers failed she would show no mercy and would have them eaten by the Bane Mother . ( TV : " Invasion of the Bane " ) Personality . Mrs Wormwood was a sociopath and megalomaniac . During the Bane ' s attempted conquest of Earth , Wormwood operated with a cold , clinical and cruel mindset , having no qualms about killing even her subordinates to ensure success . ( TV : " Invasion of the Bane " ) Following the plan ' s failure and her subsequent banishment from the collective , Wormwood grew lonely , and on her return to Earth , she sought out Luke , considering him to be her " son " . Her discovery of the power of Horath convinced her that she was destined to attain it , and that Luke was part of that destiny . However , after Luke spurned her in favour of Sarah Jane Smith , Wormwood reverted back to her cruel and psychopathic ways , being perfectly willing to kill them both until Kaagh intervened . She also had a bit of a sense of humour , calling the face off with Sarah Jane ' s sonic lipstick and her phonic disruptor to be a " battle of the costume jewellery counter " . ( TV : " Enemy of the Bane " ) Tools and equipment . As an exile , she had a phonic disruptor in the form of a ring and nail polish . ( TV : " Enemy of the Bane " )