Wikia

This category contains characters that are considered cheap. It's not recommended for many people the usage of them. A cheap character fulfills any of the following conditions:

The character has unmanageable attacks.
The character has ridiculously powerful unmanageable supers, some of which kill in a single hit.
The character gains power at a ridiculously fast rate (lethal when combined with unmanageable hypers).
The character has incredibly buffed stats in Attack, Defence, Life and/or its velocities.
The character has inconsistent (or no) hitboxes.
The character kills the opponent at the start of the match or even before it.
The character constantly spams attacks, preventing the opponent from moving or attacking.
The character's Life stat regenerates at a ridiculously fast rate during battles.
All or most of the character's attacks cannot be blocked.
Shield damage is excessive.
The character has attacks with hitboxes that can hit a wide portion of the screen.

NOTE: Cheap AI does not dictate as to whether a character is cheap or not, as AI programming can (mainly) be removed without complication, and is not part of a character's core programming. Characters that are badly made do not count as cheap, unless said character fulfills any of the above criteria.