We don't have a biography for Ralphie Tennelli yet. Hang in there, or go ahead and contribute one.
Appearances
The Magic School Bus
Guest cast, played by Stuart Stone
- Episode 1x01: Gets Lost in Space (Sep 10, 1994)
- Episode 1x02: For Lunch (Sep 17, 1994)
- Episode 1x03: Inside Ralphie (Sep 24, 1994)
- Episode 1x04: Gets Eaten (Oct 1, 1994)
- Episode 1x05: Hops Home (Oct 8, 1994)
- Episode 1x06: Meets the Rot Squad (Oct 15, 1994)
- Episode 1x07: All Dried Up (Oct 22, 1994)
- Episode 1x08: In the Haunted House (Oct 29, 1994)
- Episode 1x09: Gets Ready, Set, Dough (Nov 5, 1994)
- Episode 1x10: Plays Ball (Nov 12, 1994)
- Episode 1x11: Goes to Seed (Nov 19, 1994)
- Episode 1x12: Gets Ants in Its Pants (Nov 26, 1994)
- Episode 1x13: Kicks Up a Storm (Dec 4, 1994)
- Episode 2x01: Blows Its Top (Sep 9, 1995)
- Episode 2x02: Flexes Its Muscles (Sep 16, 1995)
- Episode 2x03: The Busasaurus (Sep 23, 1995)
- Episode 2x04: Going Batty (Sep 30, 1995)
- Episode 2x05: Butterfly and the Bog Beast (Oct 7, 1995)
- Episode 2x06: Wet All Over (Oct 14, 1995)
- Episode 2x07: In a Pickle (Oct 21, 1995)
- Episode 2x08: Revving Up (Oct 28, 1995)
- Episode 2x09: Taking Flight (Nov 4, 1995)
- Episode 2x10: Getting Energized (Nov 11, 1995)
- Episode 2x11: Out of This World (Nov 18, 1995)
- Episode 2x12: Cold Feet (Nov 25, 1995)
- Episode 2x13: Ups and Downs (Dec 2, 1995)
- Episode 3x01: In a Beehive (Honeybees) (Sep 14, 1996)
- Episode 3x02: In the Arctic (Heat) (Sep 21, 1996)
- Episode 3x03: Spins a Web (Spiders) (Sep 28, 1996)
- Episode 3x04: Under Construction (Structures) (Oct 5, 1996)
- Episode 3x05: Gets a Bright Idea (Light) (Oct 12, 1996)
- Episode 3x06: Shows & Tells (Archaeology) (Oct 19, 1996)
- Episode 3x07: Makes a Rainbow (Color) (Oct 26, 1996)
- Episode 3x08: Goes Upstream (Migration) (Nov 2, 1996)
- Episode 3x09: Works Out (Circulation System) (Nov 9, 1996)
- Episode 3x10: Gets Planted (Photosynthesis) (Nov 16, 1996)
- Episode 3x11: In the Rain Forest (Rain Forest Ecology) (Nov 23, 1996)
- Episode 3x12: Rocks and Rolls (Water Erosion) (Nov 30, 1996)
- Episode 3x13: Holiday Special (Recycling) (Dec 25, 1996)
- Episode 4x01: Meets Molly Cule (Molecules) (Sep 13, 1997)
- Episode 4x02: Cracks a Yolk (Eggs) (Sep 20, 1997)
- Episode 4x03: Goes to Mussel Beach (Tidal Zones) (Sep 27, 1997)
- Episode 4x04: Goes on Air (Air Pressure) (Oct 4, 1997)
- Episode 4x05: Gets Swamped (Wetlands) (Oct 11, 1997)
- Episode 4x06: Goes Cellular (Cells) (Oct 18, 1997)
- Episode 4x07: Sees Stars (Stars) (Oct 25, 1997)
- Episode 4x08: Gains Weight (Gravity) (Nov 1, 1997)
- Episode 4x09: Makes a Stink (Smell) (Nov 8, 1997)
- Episode 4x10: Gets Charged (Electricity) (Nov 15, 1997)
- Episode 4x11: Gets Programmed (Computers) (Nov 22, 1997)
- Episode 4x12: In the City (Critters) (Nov 29, 1997)
- Episode 4x13: Takes a Dive (Coral Reefs) (Dec 6, 1997)