Twinfector

"The Twinfector is a surprisingly fun and well-designed Nexo Knights vehicle set that wins over skeptics — its unique mirroring split-and-reconfigure gimmick, standout minifigures, and sharp 'Greentron' color palette make it one of the stronger entries in the theme's final year, earning a BrickScore of 73.9"

The Twinfector earns a solid BrickScore of 73.9, with reviewers broadly agreeing it's a pleasantly surprising small set that punches above its modest price point. The standout feature — splitting into two separate hover bikes that can be reassembled in a mirrored/reversed configuration — is almost universally praised as genuinely clever and uncommon for LEGO. Minifigures are a consistent highlight, with Pola, Fred, and Aaron's Season 5 variant drawing particular praise for printed details and unique designs. The main criticisms center on the repetitive mirror-image build process and some structural awkwardness when the vehicles are separated into bike mode.

Where they split: One LEGO.com reviewer felt the color scheme was not kid-friendly and that the overall design was underwhelming, with too many open studs — a notably more negative take than the expert reviewers (JANG, The Rambling Brick) and most other buyers, who praised the color palette and design as highlights of the set.