Opal City Characters Coming Into The Flash?

Towards the end of episode 16, 'Trajectory', of The Flash, there is a scene of Harrison Wells' daughter, Jesse Quick, going on a bus to Opal City. Now this could mean that characters from Opal City, superheroes and supervillains, may be coming to Central City to help or attack The Flash. This has been done before, at the end of series 3 of Arrow, where Oliver and Felicity go to Coast City, the home of Green Lantern.

So what characters could we expect to see come from Opal City?

Starman (David Knight). Starman has a small, hand-held, wand-shaped weapon, called the Gravity Rod. When used, it could harness solar energy and turn it into beams of light. The rod also granted the wielder the power of flight, hence the name, 'Gravity Rod'. The title of Starman has been used by multiple people, originally David Knight's father, Ted Knight. However, after the disappearance of his father, David followed in his footsteps into becoming Starman. David Knight quit being Starman after finding out that there was another Starman, known as Will Payton. David believed Will was a better Starman than him, causing him to quit. Ted Knight returned and retired from the role of Starman and, therefore, passed down the title of Starman and the Gravity Rod to David over David's brother, Jack Knight. David Knight was shot and killed from a sniper shot, fired by the son of Ted Knight's arch-nemesis, The Mist. Due to David's death, his brother, Jack Knight, took on the role of Starman.

Elongated Man (Ralph Dibny) Elongated Man, like Plastic Man, had the ability to stretch his body because of a drink he drank called 'Gingold'. Gingold contained a fruit called 'qingo', which was a rare fruit, most people were allergic to. Ralph moved to Central City and made himself a suit, to become Elongated Man. There, he met Barry Allen and they became good friends. Because of his publicity appearances, Ralph became rich and famous. From this, he met and later married, Sue Dearbon. After travelling the world with Sue, they both settled down when Ralph joined The Justice League. Both, him and Batman normally used their detective skills together, but Ralph was often in Batman's shadow. Ralph once helped find Wally West, friend of Barry Allen, from The Turtle, who had the ability to slow time. After moving back to Opal City, Sue was attacked in their home and was murdered. Ralph was convinced that Dr Light murdered her, as he attacked as raped her, whilst Ralph was a member of The Justice League. The Justice League altered Dr Light's mind to make him less threatening and also wiped Batman's mind, as he did not agree with the procedure. Ralph later discovered that Sue was murdered by Ray Palmer's ex-wife, Jean Loring. Ralph abandoned the Elongated Man personna, because of Sue's death. Ralph later found Sue's gravestone vandalised with an inverted 'S', the kryptonian symbol for resurrection. The Kryptonians wanted to resurrect Superboy, buy wanted to test the resurrection on Sue. Ralph agreed to help. The resurrection did not work and Ralph was left devastated...

The Shade (Richard Swift) The Shade was a supervillain from Earth-Two, who could manipulate the shadows with a cane, keeping him hidden. This allowed him to become a common thief. The Shade has encountered both, Jay Garrick' Flash and Barry Allen's Flash. His first public crime involved putting all of Jay Garrick's city, Keystone City, in complete darkness. This allowed him and his two accomplices, The Fiddler and The Thinker, to start a crime spree on Keystone City in the darkness, before Barry Allen got involved.

In my opinion, I think that these characters would fit in with the Flash really well. Especially The Shade for a future villain and Elongated man for a future ally as they match so well with The Flash. Besides, something similar has already happened in Series 4, episode 15 of Arrow. This episode is where Oliver asks Vixen to come to Starling City to help him against Darhk.