Adam Foster is the eldest son of Cat Grant.
Adam's parents had a custody battle over him, with Cat eventually dropping the suit and letting Adam go live with his father.
Visiting National City
Return of Adam
A guy asks Kara Danvers about Cat Grant at the coffee shop, and Kara tells him how much she respected her. Cat is upset with Kara when she sees a person in her office and calls security; it's her son, Adam Foster. She wants to have dinner with him, but he turns her down. Cat then threatens Kara for interfering, but Kara turns things around by offering to get them reservations to dine together. Kara helps Cat out with getting to know Adam while at dinner, which later on becomes awkward and, as expected, does not go well after Adam finds out about the letter. Kara goes to see Adam personally. After a short talk and an admission from Kara about the letter, Adam agreed to meet with his mother on the condition that Kara join them. During their dinner, Kara acts as a mediator and after tense talking both Cat and Adam start having a normal mother-son relationship. Adam visits Cat to tell her he is staying in town, as it turns out he has a crush on Kara, and immediately asks her out on a date.
Kara Dating Adam
Kara was slightly freaked out over Cat's attitude and that she had her own coffee. Cat was not happy with Kara going on a date with Adam. However later Kara broke up with Adam, citing she didn't have room in her life for him. Cat told Kara that Adam is leaving for Opal City. Cat confessed she prioritized herself over Adam before, and that Kara was more like her than she thought. She also stated she wanted their relationship to go back to being strictly professional.
- "Hostile Takeover" (mentioned)
- "Strange Visitor From Another Planet"
- "Worlds Finest" (mentioned)
- "Myriad" (mentioned)
Behind the scenes
- In the comics, Cat Grant's only son is named Adam Grant.
- Through all of his appearances in the comics, Adam was portrayed as a young boy rather than an adult, like on the show.
- Blake Jenner, who played Adam, was married to Melissa Benoist, who plays Kara Danvers/Supergirl.