Mestor

Mestor was a giant sluglike creature who featured in the Sixth Doctor story 'Twin Dilemma'. He planned to spread his eggs throughout the universe, bringing it under his control. He had mental abilities, which he used to take over the mind of the Time Lord Azmael, but he was defeated when the Doctor destroyed his original gastropod body and Azmael used up his last regneration destroying his mind. The figurine stands 10.5 cm tall.