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.

Obtaining them can be tricky, for most of them you have to get the killing blow on their respective Public Events, with the exceptions being Athena, Hephaestus, Zeus, and Barry (and you have to be lvl 99 to get them).

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	Get the killing blow on the respective Public Event.
Ares	+50% Attack	Get the killing blow on the respective Public Event.
Artemis	+50% LP	Get the killing blow on the respective Public Event.
Athena	+50% XP	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.
Hephaestus	Boosts gear XP	Have gear above a certain level (roughly 30-33) and you should get it automatically, or once you go to "My Gear"
Hera	+25% Crit / +50% LP	Get the killing blow on the respective Public Event.
Poseidon	+50% Drachma	Get the killing blow on the respective Public Event.
Zeus	+50% Defense	Kill Zeus while you have 50 or more Shards of Zeus (essentially fight 50 Zeus' and then kill 1 after that)