|• Characteristics •|
|Age|| 15 (by 2046)|
16 (by 2047)
|• Professional Information •|
|Affiliation||The Paradise Hideout|
|Prev. Affiliation|| Grand Valley (Shipped-out)|
Goldy Pond (Escaped)
Goldy Pond Resistance (Disbanded)
Shelter B06-32 (Destroyed)
|• Relationships •|
|Relatives||Unnamed Twin Sister†|
|Allies||Goldy Pond Resistance members, Emma, Ray, Mister, Lucas, Grace Field Escapees|
|Enemies||the demons, Bayon, Leuvis, Luce, Nous, Nouma, Andrew|
|• Debuts •|
Gillian is a teenage girl with shoulder-length light blonde hair and light green eyes. The girl is almost always seen with a large, cat-like smile across her face, highlighting her outgoing nature. She wears a pink wool-made beanie hat (which she never takes off) that is covered with pins she made by herself along with a matching pink coat with more pins she made. Underneath her coat is a lime green shirt and a pair of short jeans.
Gillian's handmade pins are either stars, bunnies or heart shaped, all of which are made with faces on them. The facial expressions on her pins seemed to mirror her own during comical situations, such as how when she was shocked, the pins would appear shocked as well.
Gillian is a high-spirited and outgoing teenage girl, which thus made her stood out from the rest of the members of the Goldy Pond Resistance, whom are mostly serious in nature. This was evident when she and Sandy are the liveliest among the team members when Violet introduced them to Emma.
What lies behind Gillian's positive nature is a sad and tragic past: When Gillian and her sister were sent to Goldy Pond as potential preys for the demons to poach, her sister was eventually killed by Luce, which greatly traumatized the girl and later stemmed to her now vengeful nature and thirst for (demon) blood, albeit she only showed it in times of seriousness such as hunting and killing the demons, or when Oliver told Emma of how him, Gillian and all the members of the resistance are aiming for their goal which is to kill all demons in Goldy Pond. Nevertheless, Gillian would still display her usual high-spirited and outgoing demeanor under normal circumstances.
When Gillian finally got her opportunity to get her revenge on Luce and his servants for killing her sister years back, the former did not hesitate the slightest as she proceeded to kill all the demons within her sight. This demonstrated how violent, ruthless and bloodthirsty she can get, at least towards the demons since they are responsible for numerous deaths of innocent lives, including her sister's.
Despite the aforementioned cons of her personality, Gillian did display good ones also. One noticeable one is her fierce love and loyalty towards her teammates and allies, particularly Nigel and Lucas. Gillian was willing to go to the extent of sacrificing her life to rescue Nigel so he and the others can be safe. Gillian showed deep respect and admiration towards Lucas, and was thus greatly saddened and cried miserably when him and Mister sacrificed their lives when rescuing her and the other orphans from Andrew and his team.
Years ago, when Gillian and her sister were sent to Goldy Pond as potential preys for the demons to poach, her sister was eventually killed by Luce and his servants. A flashback of Gillian kneeling next to the corpse of her dead sister was shown, as the former was desperately calling out the latter. Gillian somehow managed to flee from Luce and his servants' claws, and later joined the Goldy Pond Resistance sometime later. Gillian was equally as vengeful as the other six members of the team; all of them sharing the same goal and criteria, which is to seek revenge and kill the demons who had murdered and eaten their love ones earlier on during their initial days in Goldy Pond. For Gillian, the demon she sought to kill is Luce.
Upon meeting Emma, Oliver introduced her to the members of the Goldy Pond Resistance. Gillian cheerfully introduced herself to Emma and showed Emma her Farm Identifier code that was implemented right below the center of her collarbone. She recalled how her sister was killed and went on to kill Luce's attendants and later Luce himself. Later, she is wounded due to a surprise attack from Bayon, rescued by Pepe and Nigel, and taken back to where Lucas and the younger kids are hiding out to receive medical care.
More than a year has passed since the collapse of Goldy Pond and Gillian continued her everyday routine within her new home Shelter B09-32 with all the other orphans. On November 2047, Emma, Ray, Don, Gilda, Violet and Zack's search of the temple and the golden waters was finally a success, as the group announced their finding to Gillian and the rest. Before Emma could talk about the golden water she had extracted during the search with Gillian and the rest, Andrew's surprise attack blew up the shelter, Gillian and all the inhabitants went into hiding. Because of the surprise attack, the shelter was no longer a safe place for the orphans to reside in, as they came to the conclusion to abandon the place completely and go and hide. Carrying a rifle, Gillian was one of the few who lead the group of orphans, as she guided the group through an underground passage the shelter was linked to.
With Mister and Lucas' help in fending off Andrew, Gillian and the rest stayed overnight in an area underground located far from the enemies and the shelter, she was awakened by Emma's commotion. As the latter went out of the underground and onto the land above, Gillian followed her, and was shocked to see smoke lingering from the shelter. As Mister and Lucas failed to return, all the orphans began to think of how the two adults could have been killed. Gillian urged the group that they should go back to the shelter and search for them. Ray rejected her plan, explaining how doing so could get them killed. Gilliana and Ray soon began to argue as Oliver demanded them to stop. Emma tried to lighten the mood of the orphans as she announced how it is time to eat.
Andrew, who miraculously survived the explosion back at the shelter, held Alicia and Dominic as his hostages the moment he spot them. Gillian and the rest tried to rescue the two. Andrew started to talk to the orphans about Mister and Lucas, and how they are actually dead because of the shelter's explosion. Upon hearing the tragic news, Gillian was one of the many who grew incredibly upset. After Oliver successfully shot Andrew, causing a commotion which attracted a nearby wild demon who soon consumed him, Gillian and the rest went back underground with Alicia and Dominic free from the man's clutches. The entire group of orphans soon cried after acknowledging how Mister and Lucas are indeed dead. As Gillian fell onto the ground and sobbed loudly, Paula comforted her, telling her how it was okay to cry after hearing such saddening news.
Gillian and the rest proceed to find The Jaw of the Lion. After encountering Hayato and Jin along the journey, they were guided by the two to find their destination. Some time later, the group soon arrived at The Jaw of the Lion, which in turn is a base where Hayato, Jin and all the escaped orphans reside in. Thoma and Lani were flabbergasted upon seeing the hideout and rhectorically questioned what the place is, to which Jin repeated how it is their base, Gillian replied how they know that. As the group explored the base, a group of its residents went up to Gillian, Rossi and Mark and offered them tea and snacks, Gillian joyfully accepted their offer.
Gillian soon join the rest of the the group as they went to visit the hideout's boss together. Gillian was happy when she saw the boss, Norman. Norman soon began to share with the group the origins and history of the demons. Gillian listened to him intently, and was subtly shocked when she heard how Hayato and Zazie are part of the repeated drugging, experiments and breeding, as told by Norman. As Norman proposed to all of them of how he will built a paradise for all the humans in the demon world and exterminate the demons entirely, Gillian and everyone in the room, excluding Emma and Ray, were all supportive of his plan. Gillian added on how once there are no more demons, there will eventually be no more hunts and shipments as well, and thus she was happy of how they should not be afriad of be consumed again. Some time later, Norman brought Gillian and the rest to the hideout's cafeteria where they have their dinner. During the same night, Gillian encouraged Zack to carry a soundly sleeping Emma to sleep in one of the hideout's beds. 
Skills and Abilities
Goldy Pond Resistance members
When the two first met, Gillian warmly greeted Emma and was happy to have her join the Goldy Pond Resistance. Due to the fact that they have similar personalities – both are upbeat, jovial and are fiercely loyal to their close friends and allies – the two got along well.
Gillian acknowledged and understood Emma's strengths ever since the start because of how Violet chose her out of all the newly arrived orphans to become a member in the resistance, evident when she called Emma a "real escapee", and how she is from the top plantation Grace Field House. Gillian and Emma both aided each other during their fight against the poachers.
- The following are Gillian's rankings in some of The Promised Neverland's official popularity polls.