This article contains lore created collaboratively by the Blaseball community. It is just one of many Rumors that we've found in the Interdimensional Rumor Mill. You can find more Rumors about Blood Hamburger at their Rumor Registry.
Blood Hamburger (born Bloodius Hamburgeoisie) comes from the esteemed Hamburgeoisie family. After a childhood incident, Blood was constantly covered in a thick layer of goo from an undetermined source. Throughout his schooling years, Blood was constantly bullied with nicknames such as "Goober" and "Drippy," fueling his trademark unquenchable rage.
When Blood turned 118, he moved out of his childhood home of Hamburgeoisie Manor and cut all ties with his family, changing his legal name to Blood Hamburger. When asked in an interview about his estrangement, Blood stated, "I just didn't vibe with my family." He proceeded to list his problems with his sixteen siblings, two parents, two step-parents, four and a half grandparents, five aunts, seven uncles, and an impossible number of cousins.
Blood is known for his carefree attitude, veganism, and his farm, Hamburger Ranch, where he raises cows and chickens. Last year, his cow (Blood II) took home the blue ribbon in the Best Cow competition at Charleston County Fair. Blood describes the ribbon as his "pride and joy," and can be seen wearing it during games.
Blood's pregame ritual involves eating grass. When asked about this habit, Blood said, "I do it to establish a mental link with my cows before playing. My strength comes from them."