WARNING: The following contains spoilers for Stargirl Season 2, Episode 10, "Summer School: Chapter Ten".
The second season of Stargirl brings a dangerous supernatural threat to Blue Valley and the Justice Society of America in the form of Eclipso. After escaping his imprisonment in the black diamond, Courtney and Pat try to find a way to stop him from torturing the JSA and their families. With a word of advice form The Shade, Courtney and Pat search for Jennie, the Green Lantern, in hopes that she will be able to help piece together the diamond, thus leading them to Helix Institute of Youth Rehabilitation; however, the Helix Institute shares its name with a comic group and its logo with an NBC series.
Created in 1985 by Roy Thomas, Dann Thomas and Todd McFarlane, DC's the Helix Group is made of six children who were genetically modified by Dr. Benjamin Love (replaced by Nurse Louise Love in Stargirl). Due to a lack of a moral compass, the children grow up to become supervillains, led by Mister Bones, who's name dropped in the episode.
Within the episode, the Helix Institute is revealed to be secretly holding Jennie's brother, possibly to fulfill their comic origins and have Helix fight the JSA in a later season. Until then, there is one more interesting fact about the Institute -- its logo resembles that of another Helix, Heroes' Helix Foundation.
The logo for the Institute is a modified version of a DNA double helix plastered onto the front of the building. This logo is similar to Helix's logo in Heroes, a supervillain organization that the previous generation of Heroes were a part of. In Season 1, Episode 12, "Godsend," Ando remarks that the Helix logo appears to be a combination of two Japanese characters: 才 (great talent) and 与 (Godsend).
This was a major storyline within the series, as the characters tried to understand if their powers were god given or man made. It is eventually revealed some were given their abilities through experimentation, with some characters suffering major physiological side effects, such as the Saunders Sisters. The similarity between Heroes' Helix and Stargirl's Helix could have inspired the Stargirl crew to use the same logo, with slight differences.
The finale of Stargirl: Summer School airs November 2 on The CW.