I'm really not a fan of The Penguin. He's okay, I enjoyed him in Batman Returns, but I never quite liked him in any of the shows and I haven't read an excellent Penguin comic yet. He was cool in Earth One, but he wasn't himself. I was hoping this story would turn that around. One issue to convince me The Penguin is cool. I was told it focuses on the organized crime aspect of The Penguin's villainy a lot, so I was extra interested. Otherwise, I would've probably just picked up a different story instead.
Did it do that for me? Eh. Not really. But I do think I know what I want from Penguin stories now.
To start with the good, I did find the organized crime stuff very interesting. The idea that Peguin controls the streets of Gotham more than Batman is certainly original and memorable, and it's probably the best thing to come out of the penguin issue of One Bad Day. The other best thing is the part where Penguin goes berserk (not meant to be an Evangelion reference, but it does work). AWESOME panel and actually makes Penguin feel filthy and gruesome in addition to his more human side and his mobster side. When all three mix, he is a force to be reckoned with and a darn good rogue.
The art is also solid. Not anything special, but it's nice to look at.
There's only one big gripe I have with the comic, and that's that so much of it revolves around Penguin being bullied as a kid. It feels like kind of a preachy kids show message and it makes the whole thing harder to take seriously. Bullying is an important issue and can be traumatic, especially when it becomes violent, but it doesn't make for an interesting Batman comic. There's too much emphasis on Penguin, Lilli, and Elliot being a bunch of sad misfits. It's just not entertaining at all and I would even say it feels a bit preachy at times.
I'm sure that will make it just the right thing for somebody out there, but that aspect isn't for me.
I also couldn't find Penguin's voice. He certainly didn't seem like he was squawky, but he didn't seem too posh, either. Possibly a personal issue? Is there such a thing as "reader error"?
Overall, it's worth a read if you're into Penguin, but I don't think it's anything too groundbreaking for the character. Still enjoyable!