Thundarr the Barbarian (1980)

S1E2 Harvest of Doom

Thundarr, Princess Ariel, and Ookla come across a train loaded with Death Flowers, whose pollen has the power to hypnotize humans and Moks alike. This train is being driven by the Carocs, a tribe of crocodile-like beings, who are taking the dangerous cargo to a wizard.