This is the voice cast of all the characters of this book from the protagonists, supporting characters, anti-heroes/villains, antagonists, guilds, dark guilds, and other characters. Now this is going to be a long one so I'm gonna do parts of it. 

Fairy Tail Main protagonists: 

Y/N Sparda Rose: Chris Hackney 

Ruby Rose: Lindsay Jones 

Weiss Schnee: Kara Eberle 

Blake Belladonna: Arryn Zech 

Yang Xiao Long: Barbara Dunkelman 

Jaune Arc: Miles Luna

Nora Valkyrie: Samantha Ireland 

Pyrrha Nikos: Jen Brown 

Lie Ren: Neath Oum 

Pyra/Mythra/Pnuema: Skye Bennett 

Natsu Dragneel: Todd Haberkorn

Lucy Heartfilia: Cherami Leigh

Happy: Tia Ballard

Gray Fullbuster: Newton Pittman

Erza Scarlet: Colleen Clinkenbeard

Wendy Marvell: Brittney Karbowski

Carla: Jad Saxton

Shiki Grabbel: Sean Chiplock 

Rebecca Bluegarden: Kira Buckland 

Robo-Happy: Tia Ballard

Weisz Steiner: Ray Chase

E.M. Pino: Sarah Williams 

Homura Kogetsu: Laura Stahl 

Kat: Sage Mears 

Trish: Luci Christian

Lady: Kate Higgins

Modeus: Jay Hickman

Nero: Johnny Yong Bosch

Kyrie: Stephanie Sheh

Fairy Tail: Other Guild Members

Makarov Dreyar: R. Bruce Elliott

Mirajane Strauss: Monica Rial

Elfman Strauss: Christopher Sabat

Lisanna Strauss: Carrie Savage 

Gajeel Redfox: David Wald

Panther-Lily: Rick Keeling

Juvia Lockser: Brina Palencia

Levy McGarden: Kristi Kang/Hannah Alyea

Cana Alberona: Jamie Marchi

Gildarts Clive: Jason Douglas 

Ryker Clive A.K.A Doom Slayer: Brain Tyree Henry 

Vega: Kevin Schon 

Laxus Dreyar: Patrick Seitz

Ur Milkovich: Kira Vincent Davis

Witch Regret: Laura Post

Sister Ivry: Allegra Clark 

Mio Hermit: Xanthe Huynh 

Valkyrie Yuna: Rebeka Thomas  

Mosco Versa-0: Brock Powell 

Elsie Crimson: Colleen Clinkenbeard

Jinn/Kris Rutherford: Jonah Scott 

Kleene Rutherford: Marisha Ray

Laguna Husert: Daniel Woren 

Oscar Pine: Aaron Dismuke

Nia: Catrin Mai Huw 

Dromarch: William Roberts 

Tora: Rasmus Hardiker 

Poppi: Arina Ii 

Morag: Kirsty Mitchell 

Bridghid: Jules de Jongh 

Zeke: Daniel Barker 

Pandoria: Becca Stewart 

Roc: Todd Karmer

Haze/Fan la Norne: Samantha Dakin 

Freed Justine: John Burgmeier

Bickslow: Tyler Walker

Evergeen: Caitlin Glass

Romeo Conbolt: Lindsay Seidel

Macao Conbolt: Brian Mathis

Wakaba Mine: Charles Campbell

Jet: Corey Cleary-Stoner

Droy: Z Charles Bolton

Alzack Connell: Austin Tindle

Bisca Mulan: Angela Chase

Asuka: Kristin Sutton

Warren Rocko: Gregory Lush

Kinana/Cubellios: Lara Woodhull

Max Aloze: Eric Cherry

Reedus Jonah: Sonny Strait

Nab Lasaro: Mike McFarland

Vijeeter Ecor: Tyler Walker

Laki Olietta: Apphia Yu

Fairy Tail Founding members and relatives: 

Dante Redgrave:  Reuben Langdon

Summer Rose: Morgan Garrett 

Taiyang Xiao Long: Burine Burns

Raven Branwen: Anna Hullum 

Qrow Branwen: Vic Mignogna/Jason Liebrecht  

Vergil: Dan Southworth 

Mavis Vermillion: Leah Clark

Yuri Dreyar: Clifford Chapin

Sparda: Neil Kaplan

Eva: Luci Christian

Jude Heartfilia: Bill Jenkins

Layla Heartfilia: Cherami Leigh

Igneel: Jim White 

Ziggy: John Eric Bentley 

Baul: Andrew Love

That's part one done. I hope you like it. For those who don't know, I'm gonna make an OC of the Doom Slayer with the voice actor of Megatron/D-16 from Transformers One. 

Sparda, Kleene, and Laguna I gave them random, but perfect English voice actors (unless it'll change for Kleene and Laguna when the English dub of Season 2 is revealed). 

Let me know what you guys think at the comments below, peace out and enjoy!