Following his confirmation earlier this week, today, publisher Warner Bros. and developer NetherRealm Studios released a new overview trailer for the latest confirmed character: Firestorm.

The following overview of the character is provided:

Two minds sharing one super-powered body, Jason Rusch and Martin Stein are only beginning to master their abilities as Firestorm. However reconciling Jason’s brash personality with Martin’s more empirical approach is no small task. While these two don’t agree on much, one thing they never argue about is helping Batman rebuild a safer world.

Additionally, NetherRealm also took to the Injustice 2 official forums, to reveal and detail the game's in-game currency called "Source Crystals."

NetherRealm writes the following about Source Crystals:

Source Crystals are a new type of currency available in Injustice 2 that are used to purchase cosmetic features for characters. Source Crystals can be purchased using real money but aren’t required to progress or advance in the game and can’t be used to purchase Gear or an advantage in gameplay. We value our community and want to be clear – you cannot “pay to win” with Injustice 2.

Source Crystals can only be used to purchase cosmetic adjustments to your fighters, Premiere character Skins with no gameplay advantage, and various Shaders for character costumes.

You can also Transform Gear with Source Crystals. Transform Gear allows you to apply the visuals of one piece of Gear to another piece. For example, if you have a piece of Gear with your perfect stat loadout but it doesn’t have your perfect look, you can apply the visuals from one of your other pieces of Gear to it. After using Transform Gear, your Gear piece will have your preferred stats matched with your preferred visuals.

Source Crystals offer more opportunities to customize your fighters that won’t affect gameplay or game progression. The cosmetic adjustments to your characters are for you own personal preference of how you want your fighters to look, and can add details to your characters overall appearance.

Character Shaders offer a wide range of color combinations for your character Gear. Premiere Skins will change your character’s look from top to bottom. For example, you can change Supergirl into Powergirl, but the power and stats of the character are still based on Gear equipment that you’ve earned through playing the game. The Premiere Skin change is only visual.

Source Crystals can help you save time in the game. For example, once you level a character up to Level 20, you can use Source Crystals to level up other characters to 20. This is optional and won’t affect gameplay or game progression.

Source Crystals can be purchased in the PlayStation and Xbox One Stores.

Prices for Source Crystals will be communicated at a later date according to NetherRealm.

Injustice 2 is set to launch for PS4 and Xbox One on May 16, 2017.