Changes

Likewise the other embodiments, along with [[Paradox]] and [[Bruno]], Jakob is a left-handed duelist.

Jakob is the largest member both in height and mass of the three emperors. Although no official height has been given, Jakob is over seven feet tall, and has massive arms, as seen when Sherry was able to wrap her entire body around one of his arms. As the oldest Emperor of Yliaster, Jakob has wrinkled skin, most notably under his eyes, and a long, father-time style gray beard that reaches all the way down to his waist. In addition to the beard, Jakob has an overgrown right eyebrow that covers his right eye, and his left eye is yellow. Other than the beard and the eyebrow, Jakob does not have any other hair on his head.

Like the other emperors, Jakob primarily wears white, has a white cloak and hood, and a red gem on his head. Unlike the other emperors though, Jakob's gem is above his right eye instead of between his eyes. He also has a gray patch with an Infinity symbol on his face, but unlike Lester and Primo, Jakob's patch covers his nose and mouth similar to a gas mask, which muffles his voice.

Jakob's color variation other than the white is a dark golden orange, as seen on his pants, front, and the shoulder pads that pin his cloak. Jakob wears black gloves, metal arm bands and black boots. His pants, which are the golden orange and white, are loose around his feet, and underneath Jakob wears black boots. The white cloak that Jakob wears covers a white armor shell over his chest, back, and shoulders, which on the front bears an infinity symbol similar to that of the [[Machine Emperors]]. However, rather than a glowing green core, Jakob's symbol is shut. Directly underneath the symbol on the chest, Jakob's abdomen unfolds to reveal a duel disk is built onto him.

Jakob appeared alongside Primo and Lester when Primo acquired his [[Wisel|Machine Emperor Wisel Infinity]]. Jakob noted that they did not have to do anything for the tablet to arrive on its own, and pondered on whether that means that all the tablets will just show up on their own. When Security arrived to investigate the site, he recognized [[Lazar]], and comments that they were supposed to meet Lazar earlier, but he they had stood him up to come and retrieve the tablet. Jakob stood quietly as Primo and Lester explained to Lazar who they were and that they were the new directors to replace [[Rex Goodwin]].<ref>{{episode|Yu-Gi-Oh! 5D's|65|ref}}</ref>

As the leader of the [[Three Emperors of Yliaster]], Jakob has immense power, but it is difficult to gauge because he mostly works behind the scenes. His largest demonstration of his power was seen in [[Yu-Gi-Oh! 5D's - Episode 110|episode 110]], when he uses telekinesis to move Primo and stop his stone tablet, as well as possessing superhuman strength, as seen when he easily defeated [[Sherry]] in a fight using only one arm at a time, and threw her motorcycle into the ocean and destroyed [[Elsworth]]'s. His [[Duel Disk]] unfolds from the hidden compartment built into his abdomen (which was also shown in Episode 110, when he reveals [[Grannel|Machine Emperor Grannel Infinity]] by activating his Duel Coat). Something that Jakob also did was run as fast as the [[Duel Runner]], yet it could be seen that he had combustion coming out of his feet, maybe to speed himself as he ran. Just Like Lester and Primo he is able to inflict real damage when he duels.

* [[Grand Core]] x2 ([[Destiny Draw (rule)|Destiny Draw]])

* [[Sky Core]] x2 (Destiny Draw)

* [[Solidarity]] x2