Larvbat
The Larvbat is a flying creature in the Keen 4 mod Atroxian Realm released by Gridlock.
These bluish bat like creatures can cause no harm to Keen. They will push around anyone that comes near them, which may do have the uncanny ability to push Keen into hazards. Therefor they can be quite a nuisance.
Being bats, these creature can be found in caves, caverns as well as in swampy regions. But they are not to be seen near any caves in which Hornets have their habitats as well. However they show their first swarming appearance in the secret part of the BWB Megarocket Crash Site level. The Larvbats are also located in the following places: Dark Swam, Murky Marsh, Larvae Lagoon, Crystallite Caverns, Emerald Canyon and Brithom Bog.
The in-game help text states: Swarms of these pests infest the swamps and caves of Krisle. They won't harm you, at least not directly
The Larvbat is a Skypest replacement.