Señor Siniestro (real name: Sergio) is a very small, 13-year-old, Italian boy and a student at Leone Middle School. He is a cowboy-themed supervillain who was transferred to Miracle City and swore revenge after being humiliated by wearing a cowboy costume. He is one of El Tigre's most powerful foes.
Description[]
"Sergio is a very small 13-year-old boy who recently moved to Miracle City from Italy. On his first day at Leone Middle School, he foolishly wore his beloved cowboy costume, complete with broomstick horsey. Humiliation, unintentionally led by Manny, ensued and Sergio swore revenge on Miracle City, especially Manny. Sergio's supervillain suit of choice is a 10-foot-tall robot suit. When inside the suit, he's unrecognizable and poses as an adult cowboy supervillain Señor Siniestro. Sergio also builds other cowboy robots to assist him in his villainous adventures. Señor Siniestro is usually found spewing cowboy lingo in an absurdly inaccurate Texas accent while looking for his foe, Manny Rivera."[1]
Appearance[]
Señor Siniestro is a small and teenage boy with a tan skin and light-rose blushed cheeks. He has a big forehead with a short brown hair, brown eyebrows, and red-colored eyes. As a student of Leone Middle School, he wears a dark-yellow crown with a brown cap, long-sleeved, navy-blue vest with a white uniform and black small tie over it, black shorts, white socks, and brown shoes. He has a button controller on his arm, consisting of a grey base, red controller, and brown strip that is strapped to his arm.
As a super villain, he often wears a tall, robotic suit and controls different giant, upgraded robots each time. It has a black, metallic, cowboy-themed suit, consisting of dark-brown metallic cuffs with silver circle-shaped metals and a silver skull buckle on its chest. It also has a silver metallic arm, connecting to its large, half-oval-shaped hands with a decorated skull on its left arm and a red "SS" logo on the right, silver rectangular-shaped finger, as well as its black metallic waist, connecting to its black square-shaped legs. He wears a red half-mask and a black metallic, torn hat, consisting of pointy-shaped sombrero with a small skull and blue-green hatband.
Personality[]
When talking to peers at the middle school, he acts nice and understanding. However, secretly he is more diabolical in thought. Although sometimes this personality comes out without him noticing the people around him. Such as him laughing maniacally when other students are around him, when he notices he stops and said he remembered a funny joke. He has a major crush/obsession on Frida shown in Wrong and Dance where he was excited with her asking him out even willing to change himself for her. When Frida canceled their date, he was so angry with her that he disregarded that his new bad attitude attracted the attention of three girls who all rejected his rival Manny. He wasn't satisfied with their affections simply because they were not Frida who he swore to make his.
However, as Señor Sinestro, he is much harder and more ruthless to his foes.
History[]
Early Life[]
Ever since he was a young child, he dreamed of being a cowboy, so he came to Miracle City in order to fulfil that dream.
On his first day of school, he foolishly wore his beloved cowboy costume, complete with a broomstick horsey he called Mr. Broomyhorse. Unfortunately, Manny believed he was an elementary schooler, but he told him he was in the seventh grade, and everyone laughed at him as he was just making a complete fool of himself. Manny helped join in on the laughter (even though he didn't really want to), prompting Sergio to develop a hatred for him.
Relationships[]
Diego/Dr. Chipotle Jr.[]
He is friends with Diego, secretly Dr. Chipotle Jr. The two occasionally play video games together in Sergio's barn. They are both aware of each other's secret supervillain personas.
Frida Suarez[]

Much like his friend Diego, Sergio has a crush on Frida Suárez. His attempts to woo her are as ineffective as his friend's.
Powers and Abilities[]
In his robotic suit, Señor Siniestro possesses super strength, the ability to fly as well as a large arsenal of weapons with which he can blast his enemies to smithereens. Despite the suits great strength, it does not appear to be very durable, as it is often seen being destroyed or falling apart after fights with El Tigre or after suffering a large impact.
Sightings[]
Gallery[]

Click here to visit Señor Siniestro's Gallery!
Trivia[]
- Sergio was inspired by Jorge R. Gutierrez's obsession with cartoons and attending school in United States, only for students to laugh at him.[2]
- Sergio was named after spaghetti western film directors, Sergio Leone and Sergio Corbucci.[2]
- Señor Siniestro's robotic, mech-suit was inspired by identical-supervillains counterpart of Iron Man and Batman.[2]
References[]
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