Each Bee has between 10-20 upgrade slots available. Using upgrade items, players can upgrade their Bees however they choose. The number of upgrade slots a Bee has is determined by the Level of its mother Queen (For example: A Level 12 Queen will always produce a male Bee with 12 upgrade slots). If a Generations Bee is hatched from an Egg, he will have 10 upgrade slots. Genesis Bees have 20 upgrade slots.

Reminder: Genesis Bees cannot be obtained through gameplay. They can only be purchased by visiting the in-game Marketplace or the secondary market.