Arachno

Arachno was a group of titans that lived in the Hollow Earth and was first introduced in Godzilla vs Kong. They are characterized as rouges who dont want anyone as their king.

Godzilla vs Kong
as Kong and some HEAVS made their way through the hollow earth waking up some Arachno drones who scuttled away and were eaten by a Foetedon.

Zilla: underdog
arachno's left the hollow earth when kong became king as they didnt want any titan as their king. Assuming the surface world was free of alpha titans they attacked tokyo before zilla started attacking them. However the tide soon turned when the arachno queen arived. They overwhelmed zilla nearly killing him before godzilla arived killing the queen.

later an arachno drone was captured by the prometheus corporation before being provoked by kirai serizawa causing it to escape. Before it attacked the group he was with the drone ended up freeing them and was attacked by some mercenaries with firearms. After that their fate is unknown.

Kong: resurgance
TBA