The Chimera is a four headed monster and the Wave Boss of the 2nd Wave.
The Chimera is a four headed monster with the body and head of a lion, the head of a goat, the head of a dragon, and having a snake for a tail.
While Naofumi is out protecting the local villagers during the second wave Motoyasu, Itsuki, and Ren defeat it and each absorb a head. It is responsible for unlocking the Chimera Shield Series which includes the Chimera Meat Shield, Chimera Bone Shield, Chimera Leather Shield, and Chimera Viper Shield. These shields each comes with one equipment bonus except for the Chimera Viper Shield which has several. The bonuses include "Cooking Skill +1", "Darkness Resistance (M)", and "Defense +10" respectively. The Chimera Viper Shield initially contained the equipment bonuses "「Change Shield」" "Antidote Mixing +1" "Poison Resistance (M)" as well as the special effect "「Poisonous Snake Fang (M), Hook」" Found in chapter 『Chapter 25』 of the web novel. The three other heroes ignored the viper head due to it being considered "loser material" in comparison too the other three heads. In the Spear WN, Motoyasu absorbed the viper head and gained a spear with poison abilities. He stated that the spear gained from the lion head had much better stats, so he put off unlocking the viper spear.