|Place of origin:||Earth|
|Appearance:||Partners in Crime|
|Main actor:||Martin Ball|
Roger Davey was a male human living in London.
At one time Roger was fat and therefore took on the Adipose Diet. He lost most of the fat and soon was slim. Yet he still continued on the diet. Every morning while he was on the diet, he was woken up at ten past one in the morning by the alarm going off. He phoned in experts, tried to have the alarm replaced and even phoned Watchdog. No burglar could be found. The Tenth Doctor visited him and asked him about the Adipose diet. Roger explained to him about the alarm and the Doctor noted that Roger's house had a cat flap.
After Matron Cofelia activated full Partheogenesis the remnants of Roger's fat began to turn into Adipose who then escaped through the catflap. Following the deactivation of the Partheogenesis, Roger returned to normal and stayed off the Adipose pills. (TV: Partners in Crime)