The following are known Action Replay Codes for Bakugan: Defenders of the Core on Nintendo DS (DS).

These codes are for the European version of the game.

Game ID: B4BP-4D4A8284

Press Select for Max Core Energy
94000130 fffb0000
020a3f7c 0098967f
d2000000 00000000

Refill Health (Select+L)
94000130 fdfb0000
920a3882 00ff0200
b20a3802 00000000
da000000 00000072
d7000000 00000070
d2000000 00000000
Press Select+L to activate

Energy for Battery and Goggle Never Decrease
9219cd72 000068c1
1219cd76 000046c0
d2000000 00000000

Unlock All Cards (Select)
94000130 fffb0000
c0000000 00000004
020a3fcc ffffffff
dc000000 00000004
d2000000 00000000
Press (Select to activate)

Unlock All Bakugans (Select)
94000130 fffb0000
c0000000 00000004
020a3fe0 ffffffff
dc000000 00000004
d2000000 00000000
Press (Select to activate)