G-Series

The G-Series is a type of automatic train made by OwenChuaRBX at the Singapore Railways Works. It was an intended successor to the OCX-Series and was the first train to feature a molded front built out of negative unions. The train was deemed a failure after numerous flops including design flaws.

The G-Series was operated by Infinite Railways, TransRail, RailLink, and muffahi's trains, and a few more. This unit was intended to run for Owenton and Waterfront Line services, but was likely to be replaced by the W-Series within due time.

In 2020, the G-Series on the Owenton and Waterfront Line was replaced with the A-Ultra Series. All of the other aforementioned operators retired the train, except for muffahi's trains, which continued operating it in Robloxian automatic subway despite the lack of updates to the game. On 08 July 2022, the AutoConnex Subway began operating the G-Series, becoming the newest operator of the train. On 06 October 2022, the Robloxian automatic subway game was content deleted, resulting in the retirement of the G-Series from muffahi's trains and leaving AutoConnex Subway as the sole operator of the G-Series.

On 22 February 2023, the G-Series was finally retired from AutoConnex Subway as the Haywood Line was extended to Haywood, replacing it with the JR-Series.