### Ekans
From above, if it tucks its tale in.

![Ekans](https://cdn2.bulbagarden.net/upload/thumb/f/fa/023Ekans.png/250px-023Ekans.png)

### Parasect
Again, if it tucks in.

![Parasect](https://cdn2.bulbagarden.net/upload/thumb/8/80/047Parasect.png/250px-047Parasect.png)

### Ludicolo
From above.

![Ludicolo](https://cdn2.bulbagarden.net/upload/thumb/f/ff/272Ludicolo.png/250px-272Ludicolo.png)

### Seedot
From above.

![Seedot](https://cdn2.bulbagarden.net/upload/thumb/8/84/273Seedot.png/250px-273Seedot.png)

### Castform (Normal form)
From above.

![Castform (normal)](https://cdn2.bulbagarden.net/upload/thumb/f/f3/351Castform.png/250px-351Castform.png)

### Shuppet
I think the skirt can be tucked in so it looks circular from above.

![Shuppet](https://cdn2.bulbagarden.net/upload/thumb/4/4b/353Shuppet.png/250px-353Shuppet.png)

### Snorunt
Again, I think the hands can be tucked in and it will be circular from above.

![Snorunt](https://cdn2.bulbagarden.net/upload/thumb/6/6b/361Snorunt.png/250px-361Snorunt.png)

### Drifblim
From above. It's the evolved form of Drifloon which was mentioned in another answer, but, well, they are different Pokémon and Drifblim wasn't explicitly mentioned yet, so...

![Drifblim](https://cdn2.bulbagarden.net/upload/thumb/7/71/426Drifblim.png/250px-426Drifblim.png)

### Happiny
From above, of course.

![Happiny](https://cdn2.bulbagarden.net/upload/thumb/2/27/440Happiny.png/250px-440Happiny.png)

### Solosis
It's... literally a sphere...

![Solosis](https://cdn2.bulbagarden.net/upload/thumb/1/1e/577Solosis.png/250px-577Solosis.png)

### Vanillite
The clouds in the picture are NOT a part of the Pokémon, so - from above.

![Vanillite](https://cdn2.bulbagarden.net/upload/thumb/3/3f/582Vanillite.png/250px-582Vanillite.png)

### Amoonguss
Another evolved form that wasn't mentioned before. Just needs to tuck its hands in before viewing from above.

![Amoonguss](https://cdn2.bulbagarden.net/upload/thumb/1/13/591Amoonguss.png/250px-591Amoonguss.png)

### Beheeyem
While I'm not quite certain about it's previous evolution (Elgyem), Beehyem can DEFINITELY look round when viewed from above.

![Beheeyem](https://cdn2.bulbagarden.net/upload/thumb/2/2c/606Beheeyem.png/250px-606Beheeyem.png)

### Litwick
Is a silhouette a shadow and does a flame affect it then? I think not, so - round from above!

![Litwick](https://cdn2.bulbagarden.net/upload/thumb/8/8e/607Litwick.png/250px-607Litwick.png)

And there were a bunch of others that I wasn't really sure about. To be honest, I wouldn't have included Jigglypuff myself because I think its hands or ears would distort the circle from any angle. It was for this exact reason I omitted a whole bunch of others like Igglybuff, Kabuto, Togepi, Sunkern, Swinub and others.