The three smaller murlocs in the bottom left of the art for I Am Murloc are (from top to bottom) Murky, Grunty and Murkimus, special World of Warcraft murloc companions rewarded from BlizzCon 2005 and 2009, and the Arena Tournament 2009, respectively.
A sponge can be seen impaled on the spike of the big murloc's spear. A hermit crab can also be found inside the shell sitting on the big murloc's left shoulder. Finally, a pink sea star with "green pants" can be seen on the shell of the big murloc's right ankle. These are references to the characters Spongebob, Patrick and Eugene Krabs from the show Spongebob Squarepants.