The Dragons of Remnant: Terrorcons Rising

The Dragons of Remnant: Terrorcons Rising is a sequel.

Summary
Since the three races are united, Steven, Ruby and Toothless spend their time mapping the world. During one of their adventures, they encounter a mysterious rider who turns out to be Ruby's long-lost mother: Summer. The Crystal Autobots and Team RWBY must counter a new threat called Terrorcons.

Crystal Autobots

 * Steven Universe
 * Connie Maheswaran
 * Garnet
 * Amethyst
 * Pearl
 * Lapis Lazuli
 * Peridot
 * Bismuth
 * Optimus Prime
 * Bumblebee
 * Ratchet
 * Ironhide
 * Jazz
 * Sideswipe
 * Wheeljack
 * Bulkhead
 * Arcee
 * Prowl
 * Smokescreen
 * Cliffjumper
 * Mirage
 * Seaspray
 * Trailbreaker
 * Red Alert
 * Sunstreaker
 * Powerglide
 * Brawn
 * Huffer
 * Tracks
 * Windcharger
 * Gears
 * Bluestreak
 * Strongarm
 * Crosshairs
 * Drift
 * Hound
 * Jetfire
 * Whirl
 * Inferno
 * Hot Shot
 * Side Burn
 * Wing Saber
 * Crosswise
 * Evac
 * Override
 * Skids and Mudflap
 * Windblade
 * Blaster
 * Eject
 * Rewind
 * Steeljaw
 * Ramhorn
 * Sundor
 * Dile
 * Zaur
 * Noise
 * Graphy
 * Perceptor
 * Beachcomber
 * Warpath
 * Clocker
 * Scattorshot
 * Hoist
 * Sandstorm
 * Stratosphere
 * Cheetor
 * Rattrap
 * Rhinox
 * Blackarachnia
 * Nightscream
 * Botanica
 * Tigatron
 * Airazor
 * Depth Charge
 * Leobreaker
 * Santon
 * Razorbeast
 * Wolfang
 * Armordillo
 * B'Boom
 * Claw Jaw
 * Polar Claw
 * Ramulus
 * Cackle
 * Longhorn
 * Battle Unicorn
 * Hammerstrike
 * Geckobot
 * Longrack
 * Stampy
 * Heinrad
 * Mach Kick
 * Break
 * Star Upper
 * Gimlet
 * Diver
 * Chainclaw
 * Slammoth
 * Catilla
 * Grimlock
 * Slug
 * Swoop
 * Sludge
 * Snarl
 * Scorn
 * Slash
 * Scarr
 * Wedge
 * Heavy Load
 * Digger
 * Landmine
 * Quickmix
 * Grapple
 * Silverbolt
 * Air Raid
 * Fireflight
 * Skydive
 * Slingshot
 * Hot Spot
 * Streetwise
 * Blades
 * Groove
 * First Aid
 * Leadfoot
 * Topspin
 * Roadbuster
 * Ultra Magnus
 * Hot Rod
 * Blurr
 * Springer
 * Kup
 * Chromia
 * Sari Sumdac
 * Isaac Sumdac

Remnant

 * Ruby Rose
 * Weiss Schnee
 * Blake Belladonna
 * Yang Xiao Long
 * Jaune Arc
 * Nora Valkyrie
 * Pyrrha Nikos
 * Lie Ren
 * Ozpin
 * Glynda Goodwitch
 * Peter Port
 * Bartholomew Oobleck
 * James Ironwood
 * Qrow Branwen
 * Summer Rose

Terrans

 * Twitch
 * Thrash
 * Hashtag
 * Jawbreaker
 * Nightshade

Guardian Knights

 * Stormreign

Terrorcons

 * Scourge
 * Nightbird
 * Battletrap

Dragons

 * Toothless(Night Fury)
 * Frost(Shivertooth)
 * Cloak(Changewing)
 * Hookfang(Monstrous Nightmare)
 * Meatlug(Gronckle)
 * Volt(Skrill)
 * Khalups(Sword Stealer)
 * Lotus(Deadly Nadder)
 * Cloudjumper(Stormcutter)
 * Summer's Bewilderbeast
 * Scourge's Bewilderbeast

Stoker Class

 * Fireworm
 * Flame Whipper
 * Gobsucker
 * Hobblegrunt
 * Shadow Wing (Large and Small)
 * Monstrous Nightmare
 * Night Terror
 * Silver Phantom
 * Singetail
 * Terrible Terror
 * Threadtail
 * Typhoomerang

Boulder Class

 * Catastrophic Quaken
 * Eruptodon
 * Grapple Grounder
 * Groncicle
 * Gronckle
 * Hotburple
 * Sentinel
 * Shovelhelm
 * Snafflefang
 * Thunderpede
 * Whispering Death
 * Screaming Death

Tracker Class

 * Moldruffle
 * Deadly Nadder
 * Mudraker
 * Rumblehorn
 * Snifflehunch
 * Thunderclaw
 * Windgnasher

Sharp Class

 * Devilish Dervish
 * Egg Biter
 * Grim Gnasher
 * Hackatoo
 * Raincutter
 * Razorwhip
 * Scuttleclaw
 * Shivertooth
 * Speed Stinger
 * Stormcutter
 * Thornridge
 * Timberjack
 * Windstriker

Tidal Class

 * Bewilderbeast
 * Luminous Krayfin
 * Ripwrecker
 * Sand Wraith
 * Scauldron
 * Seashocker
 * Shellfire
 * Shockjaw
 * Sliquifier
 * Submaripper
 * Thunderdrum
 * Tide Glider
 * Windwalker

Mystery Class

 * Armorwing
 * Boneknapper
 * Buffalord
 * Cavern Crasher
 * Changewing
 * Death Song
 * Dramillion
 * Flightmare
 * Hideous Zippleback
 * Prickleboggle
 * Sandbuster
 * Slithersong
 * Slitherwing
 * Smothering Smokebreath
 * Snaptrapper
 * Sweet Death
 * Sword Stealer

Strike Class

 * Night Fury
 * Skrill
 * Snow Wraith
 * Triple Stryke
 * Woolly Howl