Mr. Hammer

Hammer is Wrench's twin brother, identical in DNA but glaringly different in personality. He's the marginally older one of the two, and has served as self-appointed interpreter and protector of Wrench for most of their lives before their arrival in Fargo.

Unlike his generally confident and sensible brother, Hammer is short-tempered, resistant to change, and incredibly insecure about his masculinity. Despite his apparent thick-headedness, however, Hammer is also a devastatingly efficient hitman and unflinchingly loyal to his chosen family.

Personality/Mannerisms
On Hammer and obliviousness (391780)

More on Hammer and obliviousness (fringeandfur)

Hammer and biphobia (fringeandfur)

Hammer is Mac from It's Always Sunny / Hammer and creationism (fringeandfur)

Hammer decides there's nothing manlier than sex with other men (fringeandfur)

Hammer gives himself a psych up speech before each hit(trumpetandtrombone)

Hammer’s white wedding (officialnoahhawley)

Childhood/Backstory
See also Hammer and Wrench.

Teenage Hammer finds out a guy at school has a crush on him (fringeandfur)

Hammer got burned so badly by unrequited teenage love he swore off romance for life (fringeandfur)

Teenage Hammer's bad taste in t-shirts (fringeandfur)

Teenage Hammer watching porn with his high school friends (fringeandfur)

Teenage Hammer’s flirting style (ithinkehitametaphor)

Hammer hates his birth name and started going by “Hammer” back in elementary school (officialnoahhawley and fringeandfur)

Past Relationships
The girls Hammer was interested in in high school (fringeandfur and ithinkwehitametaphor)

Hammer's first love (fringeandfur)

Hammer had a pregnancy scare with his high school girlfriend (officialnoahhawley)

Hammer once slept with an older woman (officialnoahhawley)

Misc.
Every now and then Hammer realises his life has got weird (fringeandfur)

Hammer and his snuggie (fringeandfur)

Hammer meets an old girlfriend who notices he's changed (fringeandfur)

Hammer's vague sexuality is obvious in hindsight (fringeandfur)

The most Mr. Hammer card in Cards Against Humanity (officialnoahhawley)

NSFW
Young Hammer's seduction techniques (ithinkwehitametaphor and fringeandfur)

Hammer had a crush on the porn director he once worked for (fringeandfur)