Bee Banjo

Banjo-Kazooie
In Banjo-Kazooie, the Bumble Bee (or Bee as it's called in the game) is the transformation in Click Clock Wood, as well as the most expensive one in the game (costing a whopping 25 Mumbo Tokens to perform). Its value lies in its ability to fly by tapping A in mid-jump. When flying, you can press A to fly higher and hold B to fly faster. By jumping into water, it will fly automatically. It's also immune to the thicket area surrounding Mumbo's skull and to the Snarebears, but it's only usable in spring.

Banjo-Tooie
In Banjo-Tooie, the Bumble Bee is the native transformation of Cloud Cuckooland. In addition to its flight abilities introduced in Banjo-Kazooie, it can now fire stingers at enemies using Z (use C Up to aim). When flying, you can fire at a much faster rate than when standing. It will also release blue sparks when flying faster.