"Eh, it's alright," Pikachu said with a shrug. "Didn't think about asking, but I'll keep it in mind next time. I'm glad I can help."
At the bright red case, Pikachu turned his body to look at it from all angles. "Awwwww, poor Baymax. Don't worry, we'll get you sorted out." Then, to Steve, "Considering how balloon-like he usually is, I'm surprised that it's heavy." Looking over his shoulder, he gave Steve a chastising look. "You told me you found a robot. At first I thought you found something totally different. Baymax is more than just a robot! He's a friend."
That said, Pikachu returned his attention to the case. "I've never done anything like this before, so I'll see what I can do..." He then began rubbing his cheeks, which began sparking with electricity. "Gotta build up a charge," he explained.