Humaaans - Mix-&-match illustrations of humans with a design library.
Avataaars Generator - A simple avatar generator
Control Illustrations - 108 free flat illustrations with customizable characters
AVATARZ - Lovely library of diverse 3D avatars
Ouch! Illustrations by Icons8 - Professional, perfectly matching, and customizable illustrations for any designs
Boring Avatars - JavaScript library to generates SVG avatars based on text.