Lilac Cookie is an NPC Cookie that appears within the story of Sands of Yogurca. The Cookie is mostly covered by a large cloak and has a chakram in each hand, which are normally hidden behind the Cookie's back. There also appears to be a strange marking on the Cookie's left arm, though its purpose is unknown.
Lilac Cookie acts as the bodyguard for Yogurt Cream Cookie, effectively following him everywhere as commanded. However, Lilac Cookie seems to be a little haphazard about actually protecting Yogurt Cream Cookie and either goes to the extreme of potentially harming him when saving him, or not trying at all.
Lilac Cookie is also completely silent for the entire storyline of Sands of Yogurca, though Yogurt Cream Cookie seems to generally take the other Cookie's silence for agreeing with him.
- Lilac Cookie is the only Cookie that is shown to have dialogue during a story that does not actually utter a single word.
- Lilac Cookie does not accompany Yogurt Cream Cookie in Cookie Detective: Solve the Mystery despite being his bodyguard.
- Though originally designed to be an NPC, Devsisters has expressed interest several times in making Lilac Cookie playable due to fan demand.
- Lilac Cookie won a vote within Cookie Run: OvenBreak in 2020 to be released in 2021.