Main Characters Will Robinson 84 main appearances Robot 84 main appearances Narrator 84 main appearances Dr. Zachary Smith 80 main appearances Professor John Robinson 21 main appearances Dr. Maureen Robinson 21 main appearances Judy Robinson 20 main appearances Penny Robinson 18 main appearances Major Donald West 11 main appearances Robot 10 main appearances
Recurring Guest Characters The Ruler 1 guest appearances Quano 1 guest appearances Shakespeare-Reading Tape Recorder Voice 1 guest appearances Colonel Silas Fogey 1 guest appearances Grover 1 guest appearances Aunt Clara Simms 1 guest appearances Jimmy Hapgood 1 guest appearances ⇤ « 1 2 3 » ⇥