When holding Invisible Vest, set a bomb and just as it explodes rapidly press A repeatedly. This will protect you. Be careful not to blow yourself up after the Vest wears off.
Easy Charaboms
In a two player battle, you normally would lose your Charabom if you lost. However, turn off the power immediately before losing. Your opponent will get a free Charabom and you will not lose one. If done purposely, the person who wanted to give someone a copy of their Charabom would purposely lose, turning off before the final blow.
Merging Charaboms
To merge Charaboms go to "Battle Game" at the start. Then, select a file. Go to "Merge" and choose "1 Player Merge". Then, choose any two Charaboms and they will become merged to create a stronger and better Charabom than the original. Once you merge them, you can never get back to their original forms; only when you play the normal game can choose the original ones.