Spencer grew up on the show, more or less. His mother was Courtney, Sonny’s sister. She died after giving birth to Spencer in 2006 (from a virus). Nikolas raised him, but he wasn’t a very good dad because the Cassadines are all a little crazy. Many of them selfish, evil and psycho. They don’t treat each other well, and they often struggle for power and control of the family assets. They can be murderous to each other or to those outside the family,
Nikolas’ mother, Laura, is a good person, so she has been a positive influence on Spencer’s life. She gave him reasons not to become like the other Cassadines. His Uncle Sonny did the same thing, even though he’s a mobster.
Nonetheless, Spencer was spoiled for most of his childhood and got away with a lot. With his father’s wealth and his own intelligence, he did what he wanted. Unfortunately, he had to be sent away to boarding school when his life was threatened by other Cassadines.
After getting into a fight with Valentin Cassadine, Nikolas faked his own death. This was very hard on Spencer, who was now a full orphan. Laura, and her husband Kevin, raised him for a while, when he wasn’t in boarding school. Spencer was also close to Ava Jerome, but she betrayed him when she refused to be a witness against Valentin for killing Nikolas. Later, when it was revealed that Nikolas was still alive, and married to Ava, Spencer had a difficult time forgiving either of them.
When he was a young boy, Spencer was good friends with Elizabeth’s son, Cameron; Carly’s daughter, Josslyn; and Emma Scorpio, Robin’s daughter (whom he had a crush on). When he returned to town as a teen, he met up with Cam and Joss again, as well as Joss’ friend, Trina (Emma had moved away). He brought his girlfriend, Esme, to town. She seemed to be a spoiled brat, but it soon became evident that she was much worse.
Spencer is still close to Laura and Kevin, but he’s a grown man now. He was sentence to Spring Ridge for stalking Ava, and then he was briefly in prison because he left Spring Ridge to visit his mother’s grave. His Uncle Victor was able to get him out of prison with bribes. Spencer tried to like his uncle and trust him, but he knew that the Cassadines were not to be trusted.
Spencer and Esme did their best to make life difficult for Nikolas and Ava. Spencer also fell in love with Trina, complicating his relationship with Esme. After Nikolas slept with Esme, Spencer vowed to get custody of Esme’s baby (his little brother), to keep him safe. He also has to fight his Uncle Victor, who is trying to take over the world.