For the Star Wars fans out there, you see the obvious reference to its famous hero and Han Solo's faithful sidekick, Chewbacca the Wookiee. Well, that's  the simple explanation of where "Wookie" (misspelled for legal reasons) comes from. 

"Luv," on the other hand, was really just a joke. It's a sick notion of  Wookiees mating. Period.

When the band was starting out they were having difficulties coming up with the perfect name. Each member threw out various attempts none of which stuck. During the band's first gig at  the 2000 Hooter's Anniversary in Merrillville, IN, the band began the day with the name "Wookie Luv", which they had been using at various Jam Nights,  for lack of anything better. During the second set, it started raining....HARD!! The band members were troopers and played through the rain. 

After the show, they decided perhaps "The Rainmakers" would be a decent name, and would have an explainable story behind it. 

At the next Jam Night, "friends of the band" were yelling for "Wookie Luv," and just didn't seem to take to "The Rainmakers." The band guesses that it's because "Wookie" is just a fun word to yell out. 

Therefore, in an effort to please the masses, "Wookie Luv" was adopted as the official name, even though the band has a hard time explaining it to their loved ones. 

Plus it looks good on a sign, don't you think?