Porthos(VWM018) was born in a litter of four pups in the famous Whiskers on October 3, 1999. His parents were the first dominant couple of the Whiskers, Holly and Argon. His litter-mates were Aramis(VWF016), VWP017, and Athos(VWM015). The Whiskers were still a small group at the time and had few group members to help raise the pups. Due to this, VWP017 was killed at a young age before being named. Holly gave birth again in December 1999 to four pups. Porthos was still too young to help care for the pups, but he was old enough to start caring for himself. When Porthos was just a year old, his mother Holly was predated in September 2000. Porthos' half-sister Risca became the new dominant female, and Argon and his brother later left the group; however, Argon returned, but soon died. The oldest of the males named Beetle, the last of the founding males, took over as the dominant male of the Whiskers. Like all adult males, Porthos soon started to rove with his brothers and cousins. Porthos stayed in the Whiskers until mid 2001, when he and all the adult males had taken to roving. In their absence, a large of group of eleven Vivian males joined the Whiskers and did not allow Porthos and his brothers and cousin to rejoin the Whiskers.
Porthos was in the company of Beetle, the former dominant male of the Whiskers, his litter-mate Athos, cousin Lancelot, and brothers Dennis Wise, Tama, Rangi, Orgali, Thumper, and Hazel. Risca had evicted two Whisker females, one being Aramis. The Whisker boys met up with the two Whisker females and established the Hobgoblin. Beetle took dominance along with the older of the two Whisker females named Zola. The males stayed with the females for a short while; however, with no unrelated females in the group, the males started to rove. By September, all the Whisker males had taken to roving and left the group for good. Porthos was Last Seen on September 1, 2001.