Ryu

• Receive a random title or avatar item, up to five times a day. Each amiibo can be used once a day.

From NintendoSource

• Receive a lot of BP / Receive better supplies (compared to other amiibo)

Community-reported

• Receive a lot of BP / Receive better supplies (compared to other amiibo)

Community-reported

• Save and load outfit, color, and button settings / Scan another player's amiibo to friend or follow them

Community-reported

• Battle and train up a computer-controlled Figure Player of the character

Community-reported

• Battle and train up a computer-controlled Figure Player of the character

Community-reported

• Battle and train up a computer-controlled Figure Player of the character

Community-reported

• Unlock a character-based Yoshi yarn pattern

Community-reported

• Unlock randomly assigned three-minute NES or SNES game scenes. Subsequent scans change the scene.

From NintendoSource