In the Banjo-Kazooie series, there are magic users that can alter various things, including Banjo and Kazooie's form. This is a list of those spells and transformations. Generally, a transformation allows Banjo and Kazooie to either fit into a group of like members (such as becoming a walrus to befriend another walrus), to tackle obstacles otherwise unscalable as a bear and bird (such as a snowball growing bigger to activate a large switch), or to enter areas that bears and birds cannot access (such as mechanical-personnel-only doors).
In Banjo-Kazooie, all transformations are all immune to damaging terrain, can all fit in small spaces, and can all climb slopes too steep for even the Talon Trot. Most transformations cannot attack, and most of them can walk underwater with no need for air. Transformations cost Mumbo Tokens to unlock and cannot travel very far outside of a world's entrance before the spell must be undone.
|Mumbo's Mountain||Termite||Can stick to steep surfaces that Kazooie cannot|
|Bubblegloop Swamp||Crocodile||Can attack by biting, wade through the piranha infested waters, and play the Mr. Vile's mini-game.|
|Freezeezy Peak||Walrus||Can swim in frozen water, race Boggy for the first time, and allows you to enter Wozza's Cave|
|Mad Monster Mansion||Pumpkin||Can squeeze through tight spaces|
|Click Clock Wood||Bee||Can fly anywhere and land on plants Banjo can't step on|
In Banjo-Tooie, transformations cannot exit their host world (with the exception of the Stony, which can enter Hailfire Peaks, and Dragon Kazooie, which can enter any world). Most of them can attack and have varying amounts of health, which, in most cases, is also affected by the amount of energy segments you gained from Honey B.
|Isle O' Hags||Dragon Kazooie||Can enter any world, allows Fire Breath and infinite Fire Eggs||Heal||Heals the sick Styracasourus|
|Mayahem Temple||Stony||Can play kickball (both here and in Hailfire Peaks), can understand other Stonies||Summon||Controls the Golden Goliath|
|Glitter Gulch Mine||Detonator||Can detonate TNT bundles, can deal damage by self-destructing CAUTION- Doing this deals also 1 unit of damage to self!(can't self-destruct if only 1 unit of health remains)||Levitate||Lifts up heavy objects|
|Witchyworld||Van||Can pay for attractions, can open special doors, can kill enemies by running into them||Power||Powers certain rides|
|Jolly Roger's Lagoon||Submarine||Can withstand extreme pressure, can fire torpedoes||Oxygenate||Makes water breathable|
|Terrydactyland||T-Rex||Can talk to other dinosaurs, can open certain doorways (Baby T-Rex)||Enlarge||Makes things bigger|
Can scare away tough cavemen, kill enemies by running into them or by roaring (Daddy T-Rex)
|Grunty Industries||Washing Machine||Can enter mechanical-personnel doors, can wash clothing, can damage enemies by shooting Banjo's briefs (underwear)||EMP||Disables equipment|
|Hailfire Peaks||Snowball||Can grow and recover health by rolling in snow, can kill enemies by rolling fast into them||Life Force||Revives dead people|
|Cloud Cuckooland||Bee||Can fly, can shoot eyeball-piercing stingers||Rain Dance||Causes plants to grow and rainbows to form|
Transformations in Banjo-Kazooie: Grunty's Revenge are in a similar vein as those from Banjo-Tooie since most can attack. However, the transformation system allows any transformation to be used in any world provided it is used in the original world first.
|Cliff Farm||Mouse||Can chew ropes and chains|
|Bad Magic Bayou||Candle||Can illuminate the area, can light wicks and fuses|
|Spiller's Harbor||Octopus||Can swim in harmful water|
|Freezing Furnace||Tank||Can crawl over acid and open tank doors|