- Kog'Maw was first spotted during the official announcement post. He can be seen in one of the screenshots.
- Kog'Maw's name may be reference to the Cebuano term "kogmo" which refers to hardened mucus in the nose.
- The 'Maw' part also means an appetite; a stomach; the receptacle into which food is taken by swallowing.
- Ironically, even though Kog'Maw's lore and a majority of his quotes speak of his "insatiable" hunger, every ability (except his passive) involves regurgitation.
- His /dance is a tribute to Michigan J. Frog from the classic Warner Bros. short One Froggy Evening. A side-by-side comparison can be seen here .
- When Kog'Maw is reviving ( or ), his passive does not proc, and instead will do his dance in high speed.
- Kog'Maw was one of the champions chosen for the Noxian pool available during the Ionia vs. Noxus match. He was not one of the selected champions however.
- Kog'Maw is one of the four champions to have abilities which allow them to continue to attack after death. Kog'Maw's ability being and the others being , and .
- Kog'maw is the only Void-related champion to not have the word "Void" in his title.
- In his idle animation, Kog'Maw blinks one eye at a time. He will also perform a brief spin/dance that is different than his actual /dance emote sometimes.
- According to Kog'Maw's 2nd /taunt line and the Journal of Justice Issue 2, another Void Champion may be on the way.
- The Reindeer Kog'Maw skin does a different /joke from his others. It will sing "Fa la la la la" and, paired with Silent Night Sona's /joke, will sing the song Deck the Halls.
- Kog'Maw's joke is similar to the bugle charge command.
- Kog'Maw's champion select icon and mini-map icon have his "tongue" darkened, and almost not noticeable. The backdrop is also darker.
- Sonoran Kog'Maw skin, while appearing orange in the preview, actually appears brown in-game.
- His Classic skin art appears pink but is actually silver colored ingame.
- The Lion Dance Kog'Maw skin is a reference to the traditional Chinese Lion dances, performed on the Lunar New Year.
- As a Legendary Skin, the visuals of his abilities are altered to display fireworks instead.
- Deep Sea Kog'Maw skin is based on the real world Anglerfish, a fish that dwells in the deep sea.
- In the Caterpillar Kog'Maw skin he is hunting a scarab in the US version, while he is hunting a Butterfly on the Chinese one.
- Kog'Maw and Jurassic Cho'Gath share a Jurassic skin theme.
- In the background of the splash art, the skeleton on the wall beside Kog'Maw bears resemblance to , a cancelled champion.
- Also on the left of Kog'Maw is one of the limbs of the Jurassic Cho'Gath Exhibit.
- Kog'Maw, and are creatures from the Void.
- Kog'Maw was enticed into joining the League by .
- Kog'Maw claims to have a "Daddy" that is coming to Runeterra.