Collecting trains when it comes to Thomas and Friends can be very challenging especially when there are multiple sources of companies that make battery operated trains. Basically there are two toy lines of Thomas and Friends trains, one is Trackmaster and the other is TOMY.
The trick to collecting these is having a list to work from so Charles and Adam are providing to you the List of TOMY tomica trains
below. Its also helpful to understand that Trackmaster did not make all of the characters so for you can find missing characters in the TOMY line. For example Adam wanted to have the magically engine called Lady and Charles wanted Mighty Mac, both of these are made by TOMY and had to be imported from China and they are worth the extra money and wait.