Shadow in Super Smash Bros. Brawl: Playable?

Shadow the Hedgehog is NOT a playable character in Super Smash Bros. Brawl (Wii).

• Role: He appears only as a Boss in The Subspace Emissary (Story Mode), fought at Battleship Halberd Exterior.
• Assist Trophy: He is not an Assist Trophy either (that's Knuckles, Tails, Silver).
• Sticker/Trophy: Collectible only.

Playable Sonic Characters in Brawl

1. Sonic (Unlock: Play 10 hrs VS / 300 VS matches / Beat Classic with 10 chars / SSE).
2. That's it. No Tails, Knuckles, Shadow, Eggman.

Later Games

• Smash 4 (Wii U/3DS): Sonic returns. Still no Shadow playable (Mii Fighter Costume only).
• Ultimate (Switch): Sonic + Shadow as Echo Fighter (DLC Fighter Pass 1 / Separate Purchase). This is the first playable Shadow.

If you want Shadow in Brawl, only option is Project+ / Brawl Mods (PC/Dolphin) which add him as a full fighter via module injection.