First colorfull drwaing:
Nothing special about it. "Obama ko acting gardaima koi Obama bandaina". So in this drwaing, the male figure wearing a superman costume has pistol in one hand and flower in another. I have not seen any hindu daity in this type of costume. Pose resemblence a bit to Natraj but once again "Obama ko acting gardaima koi obama bandaina" no neeed to get offended.

Second colourful drwaing:

As chaurey pointed out resembles more like Medusa, a Greek mythological charcater. She does not resemble "kali" at all. Because I have not seen kali with so many snakes in her head. "Kalo hudai ma kali huncha ra" ? 

Third colourfull drawing:

Well, one of the figure has similarity to "bhairab". But basic concept of the drawing is wrong. In hindu religion Bhairab represent positive side, so is the captain america in american stories. Two good sides dont fight they will come to the conclusion after discussion.

In conclusion those colorfull draiwngs are product of either very childish mind or if created deliberately, created to evoke emotional reactions. You should not fall in this type of trap.

Guys, poster of a dog and live dog are two different things. The dog in a poster is just a "Image" not real dog. If you hit the dog in the poster, it wont do anyhting, but if you hit a real dog you will see a reaction.

If you believe in god, you must know that those drawings are not god, nobody has seen god. Even if there is god there is no gurantee that they will have "Body" as imagined in hindu religion.

I have a reservation though,

Those colorfull drwaings do not fit in the catagory of "Art". They are comic level drwaings. If you are a comic fan you see lots of this type of colorfull drwaings, but they do not qualify for "Art" and not  worth  "Art exhibition". Looks like in new Nepal comic standard drwaings are considered as a "Art". Big change.