Ettercaps are arachnid-humanoid hybrids, and not the adorkable, crime-fighting type. They live in forests, herd spiders, and generally lend an air of gloom and despair to wherever they live. Anytime a party of adventurers encounters an ettercap, it will be accompanied by at least a few giant spiders.
Ettercaps are robust in all their physical abilities, with Dexterity leading by a nose. They’re not afraid of a toe-to-toe confrontation, but considering their high Dexterity, combined with their Stealth and Survival skills, an ambush scenario is more likely, perhaps with the ettercaps beginning the encounter hiding in trees (thanks to their Spider Climb skill). They also have darkvision, Web Sense and Web Walker, making it advantageous for them to blanket dimly lit parts of thick forests with webs and wait for hapless travelers to get stuck in them. Alternatively, if there’s a road or trail that passes through their forest, they may lay webs across the path which even travelers who notice them and aren’t caught in them will still be stopped by, giving the ettercaps an opportunity to attack. An adventuring party that makes camp in the woods may wake in the morning to find its campsite entirely encircled by webs.