Wolf
The grey wolf possesses genuine predatory credentials. An adult specimen can exert bite force of 400 pounds per square inch, sufficient to shatter moose femurs. Wolf packs coordinate hunting strategies that rival military tactical operations. Historical records document wolves killing approximately 7,600 humans across Europe during the medieval period. This fear is biochemically authentic: human amygdalae respond to wolf imagery with measurable stress hormone elevation. The wolf does not merely inspire fear; it earns it through demonstrable lethality.
Spongebob
SpongeBob SquarePants presents zero documented threat to human safety. His physical composition as a porous cleaning implement renders him incapable of harm. Indeed, his perpetual optimism in the face of repeated failures may provoke mild existential discomfort in cynical viewers, but this hardly constitutes fear. The closest SpongeBob approaches to menace occurs during his infamous laugh, which audiologists have described as 'acoustically challenging' but not genuinely threatening. Fear factor assessment: negligible.