Which controversial theological leader was condemned by the Council of Constantinople?

The Council of Constantinople, held in 381 AD, condemned Apollinaris of Laodicea for his heretical views on the nature of Christ. Apollinaris proposed that Christ had a human body but not a human mind or will; instead, he argued that the divine Word (Logos) took the place of the human soul. This was seen as a significant deviation from the orthodox understanding of Christ's dual nature, which maintains that Jesus is both fully divine and fully human, possessing a complete human nature including a rational soul.

The council sought to clarify and reinforce the orthodox Christological position, which would later be articulated in the Nicene Creed. The condemnation of Apollinaris helped to shape the understanding of Christ's nature in the early Christian church and countered heretical views that threatened the integrity of orthodox doctrine.