Cerberus is an Invizimal from The Lost Tribes. It is the second Invizimal in the catalog and originates from Greek Mythology. It's attraction color is red.
To capture Cerberus you have to help him catch the ghosts and put them back to the Well of Souls (inside the fence.) To capture a ghost, simply run into it. As Cerberus collects more ghosts, he becomes slower. To get your speed back again, return the ghosts to the Well of Souls. Do this by running into an open door. But be careful, if you run into an closed or closing door your ghosts will be set free and you have to hurry to catch them again within the time limit.