Convenient - even if it is grotesque even by my standards. I'm pleased to say that doesn't sound much like my people. We're called Yeerks; as I mentioned, we remain in one form our entire lives. We do wrap around our hosts' brains, but we don't harm them. That would defeat the purpose of having a host at all.

And we certainly don't clamber in through anyone's eyes. Only their ears.

[ Which is much better and more civilized(?). ]

They can only use humanoids?