Answer the question at the end by quoting:

Sylar (Gabriel Gray) is a fictional character and a primary antagonist of the NBC science fiction drama series Heroes. Portrayed by Zachary Quinto, he is a superpowered serial killer who targets other superhumans in order to steal their powers. He served as the primary villain of the first season and then as a recurring antagonist. Over the course of seasons two, three and four, the writers depicted Sylar attempting at various times and under different circumstances to become a hero or curb his desire to kill, undergoing relapses at various stages.
Six weeks later, this Nathan starts to rediscover the other powers he had gained in his old life. Later, following Nathan's confession of being involved in the accidental death of his girlfriend Kelly Houston, her mother, Millie Houston, has him shot and buried in a shallow grave. When healed, Sylar emerges from the ground in his own body, suffering from amnesia. Picked up by the police, he is recognized and accidentally uses his powers to escape. He then encounters the "Sullivan Bros. Carnival" and Samuel, who take him in as one of their own. The carnival is hidden from Sylar's pursuers, and Samuel assures him he is safe in his new "home".  Once Sylar has rested, Samuel proceeds to show him around the circus, showing that everyone at the carnival has an ability. Sylar also meets Lydia, who he immediately hits it off with. Edgar, however, jealously attempts to outshow Sylar with his power, but is easily beaten. Samuel also notices that Sylar's memories are not his (in fact, Nathan Petrelli's). In an effort to awaken Sylar's true personality, Sylar is taken by Damien to the hall of mirrors, where he is forced to look at his past murders, starting with his mother. Repulsed, Sylar is unable to believe himself a monster. Samuel uses this to try and convince Sylar that he is a protector of the circus, and must remove threats such as the officer who attempted to capture him the night before. Sylar is told the officer is at the house of mirrors, and goes there to tell the man to leave. However, the officer shoots at Sylar, forcing an uncontrolled electric blast. Here, Sylar's killer instinct begins to take hold, but Sylar stops himself just in time for Edgar to cut the man into pieces. Later, Samuel formally makes Sylar a part of the circus family, baptizing him and letting him mingle with the others. Sylar and Lydia leave arm in arm for the night, much to Edgar's dismay.  In "Shadowboxing", the persona of Nathan returns, causing him to shapeshift back into Nathan's form while sleeping. Panicking upon finding himself at the carnival, he flies away, and is later shown arriving at Peter's door, asking for help. Arriving for work at his office, Peter and Nathan discover that no one has been looking for Nathan, as he had been on 'vacation' according to Angela Petrelli. The brothers are further surprised when the Haitian appears, and tells Peter to go see a storage facility for the truth of the situation. Here, Nathan and Peter discover the real Nathan's preserved body, which 'Nathan' touches and sees Sylar and Matt Parkman. They head to Texas to see Matt, who is at the hospital, in a coma.

Are there any other issues that come his memory loss?

Sylar is unable to believe himself a monster.

IN: Focus are a Dutch rock band formed in Amsterdam in 1969 by keyboardist, vocalist, and flautist Thijs van Leer. The band have undergone numerous formations in its history; since December 2016 it has comprised van Leer, drummer Pierre van der Linden, guitarist Menno Gootjes, and bassist Udo Pannekeet. Past members include guitarist Jan Akkerman and bassist Bert Ruiter. They have sold one million RIAA-certified albums in the United States.

In mid-1983, both of Akkerman's managers came up with the idea of the guitarist reuniting with van Leer to record new music, to which Akkerman agreed. Van Leer immediately accepted the invitation, and went on to play the synthesiser on "Headbanger" on Akkerman's 1984 solo album From the Basement. After this initial collaboration, one executive at Phonogram Records suggested the pair work with producer Trevor Horn to release an album of re-recorded Focus tracks, but it was dismissed. In the following 15 months, the two wrote, rehearsed, and recorded new music with several additional musicians with engineer Theo Balijob. Their contract required the two to record as a duet, rather under the name Focus. During the recording, producer Ruud Jacobs was brought in to supervise the project due to the length of time taken to put the tracks down. Balijon claimed Jacobs cut corners and pushed for the strongest tracks to be completed quickly to save production costs, which "unintentionally increased the animosity between Jan and Thijs". In the 63 days they spent recording from April to May 1984, around 30 tracks were completed with several additional musicians. Focus was released in March 1985 by Vertigo Records which reached number 33 in the Netherlands. The pair followed the album with promotional videos and a local four-date tour.  In 1988, EMI acquired the rights to the band's back catalogue and reissued their albums on compact disc for the first time.  In 1990, the former line-up of van Leer, Akkerman, van der Linden, and Ruiter reunited for the first time since 1975. The four played a 40-minute set at the Americahal in Apeldoorn on 20 April that was broadcast as part of the Oud van Goud television special. It came about when producer Frans Meijer asked Akkerman to perform a gig with the group, and the fact that the guitarist's manager had not seen the band play in the 1970s, so "it was swatting two flies with one hit". The other three agreed at the opportunity, and they rehearsed for four hours in Wijchen several days prior to the concert. Ruiter said they "went very well"; van Leer said it was "fantastic". Following the concert, van Leer was keen to formally restart Focus with Akkerman, though the latter felt different though he was happy to reunite with van der Linden. On 17 May the group, minus Akkerman, mimed a performance of "House of the King" on the Service Salon television program on AVRO-TV. Originally the band were to perform "Hocus Pocus" with Akkerman, but the guitarist declined the offer made by the network, stating he reunited with Focus for Meijer and his manager. The appearance went ahead regardless.  Van Leer and Akkerman shared the stage once more in 1993, performing Focus songs at the North Sea Jazz Festival.  In 1999, van Leer attempted to reform Focus with Cleuver, Ruiter, and Dutch guitarist Menno Gootjes. They performed several live dates in the Netherlands, but disagreements between van Leer and Ruiter over material intended for release effectively split up the group.

Did any one else branch out on their own after that?

OUT: