There are several different werewolves described in GURPS books already, but none of them fit well for a D&D werewolf. Werewolves are not the only lycanthropes, and lycanthropes are divided into three types by the way how much they can control their shapeshifting abilities and how they got it. This post was a big pain.
Locathahs are simple aquatic fishmen who generally are peaceful.
D&D 3.5 has only several lizardfolk subraces, but previous editions had much more. Let's convert them all. Some of them should be within the PC point budget.
Lillends are artistic serpentine outsiders from the plane of Ysgard. Good ones.
Liches are powerful undead spellcasters with their souls hidden in special phylacteries. Unless the phylactery is found and destroyed, the lich is impossible to destroy permanently. Liches make for great villains, and their precious and heavily guarded phylacteries deserve whole adventures dedicated to finding them. Note that this is a D&D lich, its template differs quite significantly from the one in GURPS Magic.
The lammasus are quadrupedal flying creatures who actively oppose evil. Stat blocks are provided for the normal lammasu and the celestial half-gold dragon lammasu also known as golden protector.
Lamias are tauric vile monsters with deceptive magical abilities. Never been a big fan of them.
I've always overlooked the kuo-toas, believing them to be just another aquatic race. Now I see that they are actually very interesting. They use exotic weapons that I've decided to represent as sasumata in GURPS terms, they can make objects very sticky (useful for creating traps and binding shields), launch lightning bolts when with a friend, and their vision is so acute that they can even quite reliably notice invisible beings.
Krenshars are hyena-wolf hybrids with an ability to pull back the skin on their faces to scare prey.
Krakens in D&D are monstrous masterminds that live in oceanic depths. Quite different from the monster provided in GURPS Banestorm.
Zelekhuts are charged with hunting down those who would deny justice - especially those who flee to escape punishment. Expert trackers, they use a combination of natural skill and magic to find fugitives wherever they may hide.
Maruts are the stongest of the inevitables. Any who use unnatural means to extend their life span (such as a lich) could be targeted by a marut. Those who take extraordinary measures to cheat death in some other way (such as sacrificing hundreds of others to keep oneself safe from a plague) might be labeled transgressors as well. Those who use magic to reverse death (resurrection spells, for example) aren’t worthy of a marut’s attention unless they do so repeatedly or on a massive scale.