Bobbleheads are collectibles that provide a boost to a players perks as a reward for collecting them, and can be found at the bottom of Game Progress (Achievements). This boost is provided account wide, making it extremely helpful when making new characters.

One requirement to obtain any Bobbleheads is that you must reach level 99.

For most of them, you have to get the killing blow on their respective Public Events and even then it is only a chance to obtain the bobblehead. The more damage you deal to the public event, the greater the chance.

Athena, Hephaestus, Zeus, Barry, Hammius and Kari have slightly different ways to obtain their Bobbleheads.

Here are all the known boosts provided by the bobbleheads. These boosts apply to your whole account, and are quite helpful for new Heroes. Note: This is added to your perks, not multiplied against them.

Bobblehead Name	Boosts Provided	How to Acquire
Apollo	+50% HP/+25% Crit	Get the killing blow on the respective Public Event.
Ares	+50% Attack / +25% Evade	Get the killing blow on the respective Public Event.
Artemis	+50% LP / +25% Evade	Get the killing blow on the respective Public Event.
Athena	+50% XP / +25% Evade	Kill enemies at Earth > Athena's Lair.
Barry	+10% All Stats	Land a killing blow on a Super Titan while you have the Poison status effect and be in the top 10 for damage.
Hades	+50% HP / +50% Defense / +25% Crit	Get the killing blow on the respective Public Event.
Hammius	+15% All Stats	Earn 100 Hamster Turds, then go to My Inventory.
Hephaestus	Boosts gear XP	Equip 8 pieces of gear that are each over level 25.
Hera	+25% Crit / +50% LP	Get the killing blow on the respective Public Event.
Kari	+25% All perks / Max Cores Increased by +249	Land a killing blow on a Core Titan while you have the Dazed status effect.
Poseidon	+50% Drachma / +25% Evade	Get the killing blow on the respective Public Event.
Terry	+20% All perks / +5 to maximum rolls for decodes	Land a killing blow on a Godly Titan while you have the Blind status effect. You must also be DR 50 or higher.
Zeus	+50% Defense / +25% Crit	Kill Zeus while you have 50 or more Shards of Zeus (essentially fight 50 Zeus' and then kill 1 after that)