Caleb, Cody, and Calvin

Unn, Ooo and Eee are three L&YR class 23 tank engines.

Bio
Unn, Ooo, and Eee worked on the Wellsworth and Suddery Railway.

Unn:

 * Someone who sounds like Michael Legge.

Ooo:

 * Someone who sounds like Jonathan Forbes.

Eee:

 * Someone who sounds like Kerry Shale.