He can immobilize anyone with his venom and glue people 's feet to the ground with his goo .
Goo Fish ( voiced by Robert Axelrod ) - A fish monster created by Finster when it was discovered that Billy was afraid of fish .
Finster can immobilize anyone with Finster 's venom and glue people 's feet to the ground with his goo .
Goo Fish ( voiced by Robert Axelrod ) - A fish monster created by Finster when it was discovered that Billy was afraid of fish .