Abstract: A combination safety/booster seat assembly includes a back/head support attached to a base by engaging hooks that are insertable into associated sockets when the back/head support is fully reclined, and become secured in the sockets when the back/head support is subsequently rotated upright. A plush cover depicting a friendly animal character (e.g., bear) is mounted over the back/head support and includes tube-like armrest covers with inward-facing paws. The base includes rigidly connected armrests and is covered by a generic seat cover. The seat assembly provides a character-based safety/booster seat with the armrest covers mounted over the armrests such that backward rotation of the back/head support is resisted, thereby securing the back/head support to the base. When the child is older, the armrest covers are detached from the armrests to allow rotation/detachment of the back/head structure from the base, thereby providing a generic (i.e., character-free) no-back booster.