Fan Cast for Sonic the Hedgehog Film

First the voice cast

Dane Dehann (The Amazing Spider-Man 2) to voice Sonic the Hedgehog. 

Dane has such a quiet yet energenic sense of humor that his voice as the blue hedgehog would rule out dramatically in the modern world in the character's cinematic universe with such spunk attitude as his character goes running at his unlimited super sonic speed.

Nicola Peltz (Transformers: Age of Extinction) to voice Amy Rose

As beautiful and dazzling as her voice is, Nicola Peltz would be the perfect choice at voicing Sonic's self proclaimed girlfriend Amy Rose in the cinematic verse and her character would be the same as she usually is in the games

Stuart Allen (Son of Batman) to voice Miles Tails Prower

As Sonic's young brother like friend, Stuart Allen would have the cute and kid like voice for Tails while the smart little fox flies with his two gyro spinning tails and builds and fixes devices, machinery, and anything that runs on technology.

Tyrese Gibson (Fast and Furious and Transformers) to voice Knuckles the Echidna

As rough and tough as Sonic's fist brawling knucklehead rival, Tyrese Gibson has rhe voice for rough and tough if anyone has seen him in many of the previous films he has done, I'm sure that he would have the tough cutting edge voice for Knuckles and if he doesn't sound like Dan Green or Travis Willingham's humerous voices who cares. Tyrese's voice should be more realistic for Knuckles to speak with in the cinematic franchise.

Christian Bale (Dark Knight Trilogy) to voice Shadow the Hedgehog

As the # 1 favorite Batman actor to many comic book fans, Christian Bale's dark snary voice as the Dark Knight in Christopher Nolan's reality point of view expressing trilogy should be the best fit for Shadow in the cinematic universe of Sonic the Hedgehog because Shadow is the more serious type  of character Sonic has ever met.

Morenna Baccarin (Firefly) to voice Rouge the Bat

After voicing Talia Al Ghul in Son of Batman, Morena has
such a dazzling. beautiful, and romantic voice to fit the seductive bombshell bat known as Rouge, who is often a spy that is into jewels and has a run in withh Knuckles.

Terry Crews (The Expandables 3) to voice Vector the Crocodile

As bold and gangsta sounding as he is, Terry Crews would have an excelent bet on being the money craving detective Vector  of the Chaotix crew.

Will Yun Lee (Red Dawn) to voice Espio the Chameleon

As silent as a ninja and skilled in Martial Arts, Will Yun Lee would fit the voice of Espio the Chameleon into perfect sense.

Greg Cipes (Teen Titans Ultimate Spider-Man and TMNT 2012) to voice Charmy Bee

For voicing characters like Beast Boy and Michaelangelo with such squeeky cute kid voices, Greg Cipes would have the honors of voicing Charmy Bee in the Cinematic films

Now for the Human Cast

Protagonists

Shia Labeouf (Transformers)

Nikki Leigh

Selena Gomez (Wizards of Waverly Palace)

Logan Lerman (Percy Jackson and the Olypions)

Zoe Kravitz (The Divergent)

Tom Cruise (Mission Impossible)

Stanley Tucci (Hunger Games, Captain America the First Avenger and Transformers Age of Extinction)

Antagonists

Besides Dr. Eggman, Sonic needs to take on threats that occur in the real world such as criminals, corruption, and especially terrorists so that the film can be successful enough to continue with 1 or 2 more sequels

Colm Feore (The Amazing Spider-Man 2, Thor, Jack Ryan: Shadow Recruit) as the leader of a secret terrorist organization therefore serving  as the film's main villain

Kelsey Grammer (Frasier and X-Men: The Last Stand) as Doctor Eggman, Sonic's arch enemy who would act as secondary

Callan Mulvey (Captain America: The Winter Soldier)

Paul Giamatti (Sideways, The Amazing Spider-Man 2)

Supporting Cast

Alec Baldwin (Thomas and the Magic Railroad) as the President of the United States

Tao Okamoto (The Wolverine) as the President's assistant

Bradley Cooper (Limitless)

Johnny Whitworth

And 

Faran Tahir

So take a moment and see if all of some of thse people on the page is worth seeing in the upcoming film that Sony is yet to release in theaters when ready. Surely it may not have everything you all want but you know that based on how much a movie is able to incorpotate, you can't always have everything included. But not to worry, if the film is successful, then a sequel to the Sonic film is sure to be made and more characters should be able to turn up then. Still feel free to elaborate on what you think of this list.