Here's the description on the website for the Steam version of Sonic Adventure 2: Battle. "Up the ante in the fight between heroes and villains with Sonic Adventure 2’s Battle Mode DLC! Upgrade your Sonic Adventure™ 2 experience with six new characters, 21 additional two-player battle maps, and Chao Karate from Sonic Adventure™ 2: Battle!"
How has no one fixed the glitched text yet?