Creature living in capsule under water and wanting crystals

This cartoon was in episodes on TV. I only remember that in this cartoon was a hunched brown creature/monster living in some kind of a capsule in water. That creature wasn’t speaking so good. It was only able to speak by some kind of green machine. That creature also wanted some kind of crystals to regain his power. I also remember in one episode of that cartoon a helper of that creature (I think it’s a female blue/gray monster with tousled hair which take one chrystal and take power. I remember that creature go to iceberg and there hit with lightning every person.
I hope someone remember this cartoon and will be able to help me. Thank you.

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