MIRADAS is a near-infrared multi-object R=20,000 echelle spectrograph for the 10.4-meter Gran Telescopio Canarias. It is the most powerful astronomical instrument of its kind ever envisioned, with an observing efficiency more than an order of magnitude greater than current capabilities for 10-meter-class telescopes. The (still-growing) MIRADAS science team includes more than 40 scientists from 8 institutions in the GTC community. In this talk, I will give an overview of the MIRADAS instrument, and particularly focus on the science capabilities and opportunities it will provide to the GTC scientific community.