Kala is actually really balanced, but she takes a bit of skill to make her work. The Kalaporters (Teleporters) are a really high utility tool. They can be used to easily escape a Monster or traverse the map quickly. When mixed with a fantastic Trapper, Kala can fully reset a fight by teleporting the team away from the Monster and letting everyone heal. She can also last the longest when the rest of the team is dead because of these, as it’s very difficult to find someone who vanishes into thin air.
The armor reducer does what it sounds like it does. It lets you go for immediate health damage instead of having to waste the beginning of a dome on knocking armor off. It’s also good for Monsters that always run, so you can ensure at least some small chip damage even if you only get really short engagements.
The Siren Missiles are the best Support weapon, by far. Leading the Monster into some that pre-placed and charged can do a whole lot of damage. Never understood the purpose of their “reload” function. But they strong, so I suppose that had to be a way to balance them.