In the English version, she is voiced by Michelle Ruff in the TV Series and Mary Elizabeth McGlynn in the movie.
Lopmon is very similar in appearance to Terriermon, being his identical twin. She is a lagomorph creature resembling a lop-eared rabbit with brown and pink fur. She has extraordinarily long lop ears and three short horns on her forehead.
Lopmon was also Antylamon of the Devas, and guardian of the South Gate to Zhuqiaomon's palace. When Suzie first meets Antylamon she is treated as a small annoyance (albeit with kindness and patience), but after spending some time together, they develop a special bond. When Antylamon's fellow Deva, Makuramon, appears and tried to harm Suzie, Antylamon drives him away. As punishment, Zhuqiaomon reverts Antylamon to Lopmon for protecting a human, and Lopmon became a partner to Suzie.
When the Tamers confronted Zhuqiaomon, Lopmon pleaded with Zhuqiaomon not to kill them. Regardless, he unleashed a blast of flame on Lopmon although in the end she was saved by WarGrowlmon. Lopmon, like the other Tamer Digimon, went to the Real World. When the D-Reaper appeared, Lopmon regained the ability to Digivolve to Antylamon to help out. Lopmon's only appearance during the final battle was when Kazu, Kenta, Guardromon, MarineAngemon and herself entered the D-Reaper to help. They arrived in one of MarineAngemon's bubbles just in time to rescue the recently de-Digivolved Tamers and Digimon. Afterwards Lopmon was forced to return to the Digital World with the rest of the Tamers' Digimon.
Digimon Tamers: Runaway Locomon
Lopmon's appearance was limited to her being accidentally taken by Henry instead of Terriermon (they were later switched back) and in the end when Lopmon and Suzie were threatened by two Parasimon which were destroyed by Beelzemon before anything could happen to them. Lopmon later attended Rika's birthday party.
- Her First English Voice Actress, Michelle Ruff is best known voicing as Rukia Kuchiki from Bleach, Zoe Orimoto, Lopmon from Digimon Frontier, Chii from Chobits, Anri Sonohara from Durarara!! and Sinon from Sword Art Online II.
- Her second English voice actress, Mary Elizabeth McGlynn is best known voicing as Kurenai Yūhi from Naruto/Shippuden/Boruto, Mei Terumī from Naruto Shippuden/Boruto, Floramon, Kiwimon, Yue Hong from Digimon Adventure 02, Ophanimon, Salamon from Digimon Frontier and PawnChessmon from Digimon Fusion.