Submerged with the waters of Elliott Bay, lay the colossus Charybdis. One of the extraterrestrial refugees taking shelter within Helheim, Charybdis is a rather placid kaiju despite her humongous mass. The kaiju rather waits at the bay floor and gobble anything that falls within her maw, be it ships or dead megafauna. However the kaiju can directly prey and ambush, using the maw-like opening located on her back to create powerful whirlpools before using the massive spikes and flexible body as a pair of massive jaws. Even the likes Modgudr is careful to not swim within range of those jaws.

https://www.deviantart.com/tyrant28/art/Charybdis-Basic-Ref-Sheet-873167773