I noticed this a while ago but never asked...

[Zygomic]

I noticed that when Kakashi was killed by Pein and he was in the afterworld or whatever you wanna call it, he say the soul (if that's that you wanna call it) of His father, Minato, Rin, and Obito. But somehow Tobi turned out to be Obito. So wouldn't he have appeared to be dead if Kakashi saw him in the afterlife?

 

[Yata]

He didn't really see their souls, he was, if you will, simply remembering people from his past. If he was seeing their souls, Minato wouldn't have been there either, since he was sealed in the Death God.

 

[rollin]

It happened differently in the manga
In the manga it was just memories
Read the first two pages

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[Punk Hazard]

He was pretty much hallucinating.

 

[Insidious Smile]

I noticed that when Kakashi was killed by Pein and he was in the afterworld or whatever you wanna call it, he say the soul (if that's that you wanna call it) of His father, Minato, Rin, and Obito. But somehow Tobi turned out to be Obito. So wouldn't he have appeared to be dead if Kakashi saw him in the afterlife?

Kakashi was dreaming. Kakashi was,and still is a dreamer to this day.

 

[Zygomic]

Ohh, okay. I see now. Thanks guys !

 

[Sir Blades]

he was remembering the past.