Turbine blade and gas turbine including same

A gas turbine comprising:

• a compressor configured to compress air introduced from an external source;
• a combustor configured to generate combustion gas;
• a plurality of turbine blades configured to be rotated by combustion gas generated by the combustor to generate power,
• wherein each of the plurality of turbine blades comprises:
• a blade body comprising a leading edge, a trailing edge spaced apart from the leading edge, a suction sidewall having an outwardly convex shape and extending between the leading edge and the trailing edge, a pressure sidewall having an inwardly concave shape and extending between the leading edge and the trailing edge on a side of the blade body opposite to the suction sidewall, and a tip region on a top surface;
• and
• a squealer tip extending upward from the tip region of the blade body,
• wherein the squealer tip comprises a first squealer tip extending upward from the suction sidewall and a second squealer tip extending upward from the pressure sidewall, the first squealer tip and the second squealer tip extending to different heights from the tip region.