I'm being [url=http://bindingofisaac.wikia.com/wiki/Loki]Loki[/url] and [url=http://bindingofisaac.wikia.com/wiki/Lokii]Lokii[/url] from The Binding of Isaac

Here's an image of him: [img=http://img2.wikia.nocookie.net/__cb20111020105612/bindingofisaac/images/4/40/Loki_full.png]
[img=http://img4.wikia.nocookie.net/__cb20120613114423/bindingofisaac/images/3/30/Lokii_cutout.png]

And also [url=http://nuclear-throne.wikia.com/wiki/Big_Dog]Big Dog[/url] and [url=http://nuclear-throne.wikia.com/wiki/Big_Bandit]Big Bandit[/url] from Nuclear Throne.

Here are images of them: [img=http://img4.wikia.nocookie.net/__cb20140812084936/nuclear-throne/images/8/80/Bigdog_idlebig.gif]
[img=http://img3.wikia.nocookie.net/__cb20140620145410/nuclear-throne/images/9/9e/Bigbandit_idle.gif]