Batty!

beatific, in a habit, believing all things

flying mammals in the habit of inhabiting a habitat
about 1300 species, flying foxes, the biggest
order Chiroptera, more maneuverable than birds!

Roy Batty, Norman Bates, and Dracula (vampire bats)
   Patrick Bateman (and Jason Bateman)
   abatement, rebate, debate
bats in the belfry -crazy, eccentric behavior
batman, batwoman, batgirl, batboy
batsman, baseball batboy
combat, battle
battery (charged with)
the wombat gone batty
batter, battery
    a batch of better butter?
bath, bathos -from sublime to trivial
baath party (in hot water?)
bathophobia-  depths (fear of Hondas!)
bat mitzvah -for jewish girls (around 12)
baton -twirled in front of a parade
batology (brambles), battology (repetition)
batta - money
batten the hatches, batten's disease

atb (all-terrain bicycle/mountain bike),
tab (cola, file folder, on a can, entablature, etc.)
bta (but then again), tba (to be announced)

bat, bet, bit, bot, but, butt, batik
bate (angry mood), bait, beat, beet, bite, bight, boat, boot

where that bat at?
bat, cat, gnat, rat
fat, hat, mat, sat, vat, spat, brat, frat
gatling, gatt (tariffs and trade), tat (tattoo)
Matt, Nat, Pat
well, that's that

you don't know a B from a battledore! haha