Speedwagon was obtainable for a limited time as a collaboration character in the mobile game Puzzle & Dragons.
ロバート・E・O・スピードワゴン
Attributes: 
Rarity: 5★ (Base)
No. 9581
HP
3,189 (Lvl.99)
ATK
2,303 (Lvl.99)
RCV
365 (Lvl.99)
Active Skill: "You’re Wide Open!" (Localized Name: "You're only covering your head!")
Pierces damage void for 1 turn; removes Orb locks, creates 1 L shape of Light Orbs.
Leader Skill: "I'm Meddlesome" (Localized Name: "The Meddler")
Reduces damage, 20x ATK & adds 3 combos with 5+ linked Light Orbs; 3x HP for Light Att.
スピードワゴンの帽子
Attributes:
Rarity: 6★ (Assist Evolution)
No. 9582
HP
3,189 (Lvl.99)
ATK
2,303 (Lvl.99)
RCV
365 (Lvl.99)
Active Skill: "Blade that Goes Straight to the Bone"
Pierces damage void for 1 turn; changes the top row and the bottom row to Light Orbs.
Leader Skill: "N/A"
N/A