The T-60 scout tank was a light tank designed to replace the obsolete T-38. This easy to construct tank was designed to close a huge gap in Soviet armored forces after the defeats of summer 1941.
The second one is KV-1 Heavy Tank. The "Russian Colossus". KV tanks were practically immune to the 3.7 cm KwK 36 and howitzer-like, short barreled 7.5 cm KwK 37 guns mounted on early Panzer III and Panzer IV tanks.