Originally introduced in 2015 as a part of the preview program, Adobe Character Animator managed to grow tremendously over the next few years. It had built-in support for markerless body and face tracking from the start, with new features such as lip-sync tracking, visual layer tagging, automatic walk cycles, particle physics engine, and many import/export compatibility addons with other Adobe suite apps added in free upgrade releases. Full support for keyframes (one of the most requested features since the very first app version) was added in late 2020, giving animators full control over the character and scene animations. The same update added many other useful features such as motion lines, triggerable audio, scene cameras, advanced search controls, and more.
Adobe Character Animator is a core part of the Adobe After Effects CC 2015 to 2017, but it can also be installed as a standalone application by users that own Creative Cloud all-apps subscription.