"I thought maybe you could love me like you used to. Even though I'm... different. But you changed too. So, here's to the new us."
In Dev Update - Champs, Lore & More, Laura 'poisonpixxi' DeYoung, Head of IP Creative for Riot Games, elaborated on their new approach to narrative cohesiveness by ironing out any inconsistencies that have sprung up over the years.
This article contains information that conflicts with this new narrative and will most likely be changed/moved in the following year(s).
Rumble is a young inventor with a temper. Using nothing more than his own two hands and a heap of scrap, the feisty yordle constructed a colossal mech suit outfitted with an arsenal of electrified harpoons and incendiary rockets. Though others may scoff and sneer at his junkyard creations, Rumble doesn't mind—after all, he's the one with the flamespitter.
"Ugh, it's gonna take forever to scrape your face off my suit!"— Rumble
Born in Bandle City, Rumble was bullied by his fellow yordles when he was younger, making him irritable and scrappy. He found solace in tinkering using discarded junk in the junkyard.
Rumble's teachers recommended him to go to Heimerdinger's Yordle Academy of Science and Progress in Piltover, but Rumble rejected it, seeing Heimerdinger and his staff as sellouts for wasting the potential of yordle technology for humans. However, this did not stop him from trying to greet Heimerdinger's human students whom had travelled to Bandle City. Unfortunately for him, the interaction culminated in him getting beaten up and hearing how much of an embarrassment he was to "enlightened" yordles like Heimerdinger. The next day, Rumble left Bandle City for several months. He returned with his mech Tristy, that he had constructed from scavenged junk, eager to show what yordle technology was capable of.
Disguising himself as an elderly merchant, Rumble visited Nashramae, Shurima to purchase wares from the other merchants. His cart was bumped into by a Shuriman cripple named Anaktu, whom was being bullied by the governor's stepson Kesu Rance and his friends. Initially indifferent towards Anaktu, Rumble took offense when Kesu began insulting him as well. He walked to his stall to activate Tristy in order to intimidate the bullies, but the mech began to malfunction, causing the bullies to attack the mech and taunt Rumble. Anaktu grabbed a mace from Rumble's stall to defend him, before swinging it at the bullies. As Kesu was about to attack him, Rumble came to Anaktu's defense with an electrified harpoon. Warming up to Anaktu, Rumble invited him to ride on his mech, letting him activate the flamespitter and inviting him to watch his Equalizer fire its rockets, barring off Kesu's escape route. Anaktu asked Kesu why he was bullying him, with the latter confessing he wanted to impress his Noxian father. With Rumble's glamour expiring, the yordle threatened Kesu with a harpoon, demanding him to apologize to him. Kesu tried to apologise for his bullying, but Rumble told him that he disrespected junk and how it had so much potential. After Kesu dumbfoundedly apologized, Rumble decided to return to Bandle City. Anaktu offered to return his mace, but Rumble let him keep it out of respect towards his appreciation of junk.
Appearance[]
Rumble disguises himself as a travelling merchant. He wears a cape and vest with short sleeves. He wears very large boots which disappear beneath his vest. Like most male Yordles, he is covered in fur.
Personality[]
Because he was bullied by others, it made him irritable, resourceful and scrappy, and make him build a mech so that no one would look down on him again.
Abilities[]
Yordle Physiology: Rumble is a Yordle, a being coming from the Spirit Realm and possesses several abilities natural of his species.
Immortality: Being spiritual beings, Yordles don't age the same way as normal humans, and they can't normally die.
Yordle Magic: Just like any Yordle, Rumble is capable of performing yordle magic, which he utilizes in tandem with his skills as an inventor.
Rumble is a resourceful yordle mechanic who is convinced Bandle City can be (if not is already) more technologically advanced than human nations (especially Piltover, where Heimerdinger 'sold out')
To prove that he is more technologically advanced than human nations, he built himself a mechanized suit from junkyard scrap (named Tristy after the one he has a crush on).
Since its inception, Worlds has grown and evolved. Each unbelievable play and phenomenal match created moments and memories that will never be forgotten. In these iconic moments, players and teams reached for something incredible within themselves and brought it to life on the Summoner’s Rift...
Rumble is a young inventor with a temper. Using nothing more than his own two hands and a heap of scrap, the feisty yordle constructed a colossal mech suit outfitted with an arsenal of electrified harpoons and incendiary rockets. Though others may scoff and sneer at his junkyard creations, Rumble doesn't mind—after all, he's the one with the flamespitter.
Bandle City, Rumble was bullied by his fellow yordles when he was younger, making him irritable and scrappy. He found solace in tinkering using discarded junk in the junkyard.
Heimerdinger's Yordle Academy of Science and Progress in 
Piltover, but Rumble rejected it, seeing Heimerdinger and his staff as sellouts for wasting the potential of yordle technology for humans. However, this did not stop him from trying to greet Heimerdinger's human students whom had travelled to Bandle City. Unfortunately for him, the interaction culminated in him getting beaten up and hearing how much of an embarrassment he was to "enlightened" yordles like Heimerdinger. The next day, Rumble left Bandle City for several months. He returned with his mech Tristy, that he had constructed from scavenged junk, eager to show what yordle technology was capable of.
Shurima to purchase wares from the other merchants. His cart was bumped into by a Shuriman cripple named Anaktu, whom was being bullied by the governor's stepson Kesu Rance and his friends. Initially indifferent towards Anaktu, Rumble took offense when Kesu began insulting him as well. He walked to his stall to activate Tristy in order to intimidate the bullies, but the mech began to malfunction, causing the bullies to attack the mech and taunt Rumble. Anaktu grabbed a mace from Rumble's stall to defend him, before swinging it at the bullies. As Kesu was about to attack him, Rumble came to Anaktu's defense with an 
electrified harpoon. Warming up to Anaktu, Rumble invited him to ride on his mech, letting him activate the 
flamespitter and inviting him to watch his 
Equalizer fire its rockets, barring off Kesu's escape route. Anaktu asked Kesu why he was bullying him, with the latter confessing he wanted to impress his Noxian father. With Rumble's glamour expiring, the yordle threatened Kesu with a harpoon, demanding him to apologize to him. Kesu tried to apologise for his bullying, but Rumble told him that he disrespected junk and how it had so much potential. After Kesu dumbfoundedly apologized, Rumble decided to return to Bandle City. Anaktu offered to return his mace, but Rumble let him keep it out of respect towards his appreciation of junk.
Heimerdinger[]
Tristy after the one he has a crush on).
