Thlayli is the name of a character in the book Watership
Down (the title of my site, "Slack Run", is a place name in the
same book). Thlayli, aka "Bigwig", is the largest and toughest of
the Watership rabbits. While not cursed with an excessive intellect,
he is completely fearless and utterly dependable in a crisis. I guess
a human equivalent would be Hoss Cartwright from Bonanza.