First time to Universal and would love to do a character meal. Which is better a breakfast or dinner? Where am I most likely to get to see the minions?

So no way to make sure you get scooby or whatever character when booking? My kids go for the characters, not the meals.
If it helps any, we went to the Character breakfast in the park at Cafe La Bamba last Summer and we saw, Gru, a minion, Spongebob, Squidward, Dora, Diego, EB and a Pink Beret from the Hop movie.
Well thats disappointingThis is what my sister and I did - to see the minions. She is a big scooby doo fan and was unable to find any meal that guaranteed scooby.

Scooby, the van, most of the scooby do characters are on the park daily
You will see them near the front of the park
I made a list in feb where the characters can be found in the parks
Will try to get that list up later tonight