Dick had pulled his Nightwing suit back on that morning sans mask, mostly because it had a lot of pockets. Lots and lots. He was going to need them, if he wanted to bring enough tools to work on the giant robot and if he wanted to eat lunch.
He definitely wanted to eat lunch. Heck, Dick ALWAYS wanted to each lunch. Sometimes even when it wasn't lunchtime.
He figured Duo could use lunch, too, so between gadgets and two lunches, well, the suit was necessary.
Also, he didn't have any other clothes.
Maybe soon, it wouldn't matter. Maybe he'd be home, with a whole closet at his disposal. He was giddy at the thought. And giddier at the giant robot. All hail giant robot! With mechanical roboty parts and a power source!
Okay, granted, he might have been a little more exited than seemed right for a grown man of twenty-six. So would you, if you'd been possessed, kidnapped by slavers, and nearly eaten by a giant penis.
Dick carefully wrapped two sandwiches into clean cloth, then tucked them into his pouches. Then he went in search of Duo or Kisame--he needed them both, eventually, so would be happy with whoever he found first.
The basement doors where he thought Duo and Ehmoi had stayed the night--and where he figured he'd end up crashing as well--were closed. He tugged on the handle, eyebrows rising when it didn't budge. Finally, he knocked, cheerful despite the gloomy vibes coming from the basement.
The possible way home would cheer Duo up. It couldn't not.