TV-Series
Description
Elmer Siegfried represents Germany in middle school international tennis competitions. Aged 14 with a December 2 birthday, he stands 170 cm tall and weighs 59 kg. His long, shaggy blonde hair is tied back with a red hair-tie, combining feminine and masculine facial traits. His eyes appear blue in manga adaptations and purple in anime.

Siegfried exhibits aggressive, prideful tendencies, readily engaging in verbal confrontations and reacting angrily to provocation. He displays intense national pride and dismisses opponents, particularly underestimating the Japanese team. This attitude manifests through refusing post-loss handshakes and vowing revenge. He fixates on Tezuka Kunimitsu as a same-aged rival, criticizing his presence on the German squad while respecting upperclassmen like his doubles partner Michael Bismarck.

He participated in a pre-World Cup exhibition doubles match with Bismarck against Japan’s Duke Watanabe and Shūsuke Fuji. Ignoring advice to consult Tezuka about the Japanese players, Siegfried grabbed Tezuka’s face and dismissed his input. Duke Watanabe struck him with a "Duke Homerun," launching him into the stands. Bismarck instructed him to remain sidelined, where Siegfried analyzed opponents’ weaknesses. Upon returning, he targeted vulnerabilities: hitting shots to disrupt Fuji’s "Hollyhock Blizzard" and positioning to counter Duke’s power moves. Duke responded with a drop shot ("Duke Bunt"), leading to a point won by Fuji’s "Triple Counter White Dragon." Germany lost 5–7, after which Siegfried refused to shake hands and swore revenge. Later, he achieved "Teni Muhou no Kiwami"—a state of heightened focus and energy—defeating A. Frankensteiner in a practice match.

His tennis style prioritizes serve-and-volley tactics, specializing in identifying and exploiting opponents’ errors and weaknesses through strategic targeting of bad habits, though aspects remain unrefined. He uses a Babolat V-PRO ALL COURT STYLE BR shoe and YONEX SUPER RQ Ti 800 PRO racket, playing right-handed.

Key relationships include his doubles partnership with Bismarck, marked by mutual trust and playful teasing. Siegfried accepted Bismarck’s sideline directive during their match and admires his resilience. His rivalry with Tezuka involves constant provocation but also a competitive drive fueled by their shared age. Personal trivia includes hobbies like woodworking/carpentry and shutting down verbal opponents. He favors gummy bears as food, gold as a color, and Christmas markets as ideal date spots. He seeks a girlfriend, dislikes tire-shaped gummies, and habitually strolls training camps to provoke Tezuka.