Art by Kostmeyer and Vale. Colours by Vale.
 
Written by Pharoah, July 2002.
Updated December 2006


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Code Name: Teryn
Real Name: Gillian DaCosta
Nicknames: Only family and close friends call her Gill (pronounced Jill). Her attitude has earned her other, less flattering nicknames.
Occupations: Student at the Massachusetts Academy. Member of the Hellions.
Legal Status: Citizen of the United States with no known criminal record.
Identity: Secret. Known to members of the Hellfire Club.
Aliases: None.
Place of birth: Rio De Janeiro, Brazil.
Age: 18
Marital Status: Single.
Sexual Orientation: Heterosexual
Known Relatives: Roberto Da Costa Sr. (father, formerly Sunspot of new mutants). Allison Crestmere (Mother, formerly Magma of New Mutants and Hellions), Roberto Da Costa Jr. (brother, current Black King of the Hellfire Club) and Krystil Frost (sister-in-law, current White Queen of the Hellfire Club)
Group Affiliation: The Hellions.
Base of Operations: The Massachusetts Academy.
First Appearance: Hellions #1 "Hellfire".
Origin: Gillian DaCosta is a mutant and was born with her powers allthough they didn't manifest until she reached puberty.
Height: 5 foot 6 inches
Weight: 120lbs (8 stones and 8 pounds)
Eyes: Blue
Hair: Black and bobbed short.
Distinguishing Marks: None
Strength Level: Teryn possesses the normal human strength of a woman her age, height and build who engages in intensive regular exercise.
Known Superhuman Powers: Teryn is a mutant terraformer able to manipulate the earth around her. She can cause earthquakes, and can cause the earth to take any shape she chooses. She is also learning to control plants and trees. Teryn must be in contact with the ground for her powers to be fully active.
Abilities/Special Skills: Shopping and Sarcasm.
Weapons Used: None
Personality: Gillian is a strong willed and cunning young woman. She does what she wants, when she wants. She believes that because she comes from a wealthy family and her brother is Black King she can do no wrong. She has joined the Hellions because she thinks she can use them to advance her own personal power, and that she will be able to get a seat on the Inner Circle as a result.
Personal Interests: Botany, earth sciences and shopping.
History:
Gillian Decosta had a life of privilege; she went to the best schools through out Europe and was thrown out of each one. Gillian believed her social status made her better than everyone around her she didn't have to follow anyone's rules. After her parents retired to Asgard leaving everything including title of Black King of the Hellfire Club to her brother, Gillian enrolled into the Massachusetts Academy at the request of her brother so that he may keep an eye on his earth-shifting sister. Gillian enrolled for her own reasons. To prove to her brother that she is worthy of a seat within the Inner Circle, she agreed to lead the Hellions. Initially, she saw the Hellions purely as a means to an end, but she has recently begun to respect her team mates – although this does not mean she has abandoned her personal agenda.