You approach the small mason jar on the shelf in the empty abandoned lab. The contents look like black ink. You just want to get a better look at the label. Lifting the jar, it feels empty even though it's clearly got liquid in it. The label on the top reads "G.E.C.K.". Strange. To your surprise, you see that the ink is moving in the jar! A pair of orange eyes are looking back at you. Before you can even gasp in surprise, they greet you and introduce themselves:

Hey there! I am a formless organism known only as "GECK". I acquire all the attributes and properties of whatever thing you tell me that I am. Would you please answer this question: What am I?