Gar is a world of magnificent and wondrous creatures, presented below are just a few of the more common.  For any other Creatures of Gar I suggest picking up the Dungeons & Dragons Monster Manuals, conversion to Star Wars is easy enough.

A Gar Dragonback is a semi-sentient offshoot of the Greater Dragons. These creature were used as beasts of burden during the Gar Dragon Wars many centuries ago. Many Dragons died in that war, and the honored tradition of the Dragon Rider has begun to fade into the past. Only a few of these noble warriors are left.  There are still rumors that a handful of the intelligent Great Dragons still exist, but no one is brave, or stupid, enough to go seek them out.

Anyone other than a Dragon Rider who attempts to ride a Dragonback must make a Ride check DC 20.  In combat the Dragon Rider may forfeit his own actions and use the Dragonback attacks instead.

D6 stats

The Gargantuan

Legend tells of a great creature, an abomination that was created, then cast aside by the Gods.  The stories tell of how this creature, full of rage, stomped across Gar destroying everything in it's path.  No man, no beast, no army or magic could destroy, or even stop it.  In their hour of need the kings of Gar joined forces and prayed to the Gods to take back the mighty creature.  But it was too late, the creature wanted nothing to do with the Gods.  It was only such arrogance on behalf of the Gargantuan that caused the Gods to intervene.  Ares and Athena joined forces and tackled the beast.  They fought for weeks, from the oceans to the snow capped mountains.  Eventually the Gargantuan was defeated, it's carcass buried under a mountain for eternity.  There is often talk that the Gargantuan will one day arise, and continue it's destructive path.  But these are just stories, aren't they...?

Gargantuan D20 stats;  Rank 0 Deity, Size Gargantuan, Str 58, Dex 12, Con, 36, VP/WP 308/36, Melee +24 (Punch 6D8+24, Defense 51 (Dex +1, Natural +40).  The Gargantuan is immune to all Force Effects.