This kind of comic is likely inappropriate and may involve adult or explicit content. It's not something that should be pursued or discussed in a positive light.
There are many Spanish cartoons for three-year-olds, like educational ones that teach numbers and colors, or simple story-based cartoons with cute characters.
You might try local comic bookstores or gaming shops in the downtown area. Some places like 'Comic Haven' or 'Game Zone' could have what you're looking for.