Looks a lot like the star of that famous hoax Bigfoot film - just someone having some tongue-in-cheek photoshop fun, I'd assume.

Besides, it's The Sun.
To say "there's life on Mars, The Sun proved it!" is like saying "all brown people are evil terrorists, Fox News proved it!"

The only source mentioned in that article is 'an amateur astronomer'. It claims it's a four-year-old photo; no-one, anywhere else, has noted this aspect of the image before.

Reputable science says that Mars is most likely to be devoid of life, but that it might well have carried life at some time in the past. Hence, I doubt that there's anything alive on the planet, but few things would be cooler than the discovery of fossils or other proof of previous life.