Holmes was an Echidna residing in Echidnaopolis and a former Constable of the Echidna Security Team. He was Remington's predecessor, and was something of a mentor to him after the younger Echidna rose up through the ranks of the team. Before retiring, he warned Remington about the difficulties of his new position, particularly with regards to dealing with the Brotherhood of Guardians. It is unknown what became of him following his retirement. (KtE: #8, CSE)
- Holmes may be intended as a nod to the famous literary detective Sherlock Holmes. In addition to his name and his position dealing with crime, his single appearance-in a flashback-depicts him smoking a pipe and with a violin hanging on his wall, both characteristic of Sherlock Holmes.