Twisted Yatta

Yatta has the biggest gap between walking and chasing of any Common. He ambles at 7, the slowest walk of all 37 Twisteds with data, then bursts to 19, tied for 8th, a jump of 12 points that no other Common comes close to. That means he looks harmless when wandering and is genuinely fast the moment he notices you. The wiki lists no special mechanic, so the speed swing is the whole story.

A chase of 19 is above the median of 18, so reading the sight lines early is the best defence. His vision is 30 in a circle and 60 direct, hearing is 140 (13th of 37) and attention span is 1.5 seconds, which is brief: once you are around a corner and out of sight, he drops the chase quickly. Do not be lulled by the slow stroll and cut across his path. Yatta's own Toon has 5 stars of Extraction Speed and 4 of Movement Speed but only 1 of Stamina, so it should work in bursts and leave early, and it drops candy items after finishing a Machine.

Yatta is a Common Twisted. At 100% Research you receive the Party Popper trinket, which highlights nearby Twisteds for 5 seconds each time you start working on a Machine.