Grodd made his long-awaited appearance this week, which rather begs the question of where exactly he's been? They mentioned his base in the sewers, and how he's moved his lair elsewhere, but otherwise there was no mention of his activities in the time between the last time we saw him and here. Clearly he hasn't been too active in Central City, because that's the sort of thing you'd hear about, but it's strange to think that this intelligent, psychic gorilla would just be chilling out on his own all this time. What has he been doing in his time away, and why was it only now he made a reappearance?