In my opinion? No. I firmly believe that items cannot have any sort of moral or ethical leaning, as they are simply items. It's all in how the people, the ones with morals leanings, use said item.
What do I mean by that? Well, consider money as a great example. Money is a necessity. You have to have it to pay for food, clothing, shelter, and other services that could be considered essential. Money can be used for good or evil. I've heard it said that "money is the root of all evil," but I don't think that's true. I'd rephrase that to "the love of money is the root of all evil." Let's take guns as another example. Guns, despite them being purely invented for violence, can also be used for good or evil. I can use a gun to defend helpless victims from a crazed lunatic, shooting the aggressor in the leg to pacify him. In the same way, I can use it for evil, like to rob a bank or something. It's all in how you use it.
Back to Pokemon. Despite what people say, I don't think it can be evil. It's a simple turn-based role-playing video game, it has no capacity for good or evil on it's own. Christians (and I'm a Christian myself, so I can say this) love to decry Pokemon as satanic, evil, distracting, etc, but I honestly find no biblical evidence for their claims. Now, you can become obsessed with Pokemon, ignoring everything and everybody else in your fixation on it, and I suppose that could be considered bad, but again, it's all in how you approach it. Groups like PETA love to cry the Pokemon encourages animal abuse (seriously, PETA?), but completely fail to recognize that Pokemon battles are more like boxing matches in real life. The Pokemon are willing participants, and many in-game references say they enjoy battling. When groups like Team Rocket are shown abusing Pokemon for their own schemes, they are clearly portrayed as villains, and the game stresses that they are in the wrong.
It's all in how it's approached. There's a capacity for evil, but if parents are involved in their kid's upbringing and help them differentiate between right and wrong, it can be easily avoided.
