Dark Dragonite's Pokémon Power does not have the "you cannot use this Power if your bench is already full" text like most other Bench-building powers and attacks do. Does this mean that by using Dark Dragonite you can bypass the normal five-Pokémon limit to your bench?
C'mon. That's silly. There isn't room to put the reminder text on every single card. The rule is the bench can only have 5 max (EVER).
Source: WotC Chat (2000-04-27)