Is gru's dad guild masters older brother?

I was suspecting that too! Maybe he traveled to that country where that blond lady stalker terrorized the blind doctor guy and fell in love but never knew she was with child

I think so too

Wait, I can totally see that!!!

I dont think so, cause the blond lady looked more like she was plotting. I think she'll pretend to be Geuru's mom to get close to her, but i dont think she actually is.