Tekno the Canary

One of the more noteworthy characters designed and created by Lew Stringer, Tekno debuted in Sonic the Comic #64 and is a scientific genius and engineer. She is one of the key Freedom Fighters on Mobius. While she possesses similar attributes to Porker Lewis, she is far more adventurous and spends her days building up a backlog of inventions for every eventuality & then seeking out chances to use them against villains in the field.

She was originally a weapons designer for Robotnik and was responsible for the creation of the super-alloy Megatal. When Robotnik caught her working against him by making anti-Badnik weaponry, he had her taken away to the Badnik Processing Plants; Shortfuse the Cybernik intervened to save her in The Cybernik Strikes Back [STC issues 63-67]. In exchange she fixed and repainted his armour and helped him in a mission to bomb one of Robotnik's Chemical Plant Zone factories. Tekno would assist Shortfuse several times after this by giving him repairs and logistical support. When Sonic was missing in the Special Zone, she was introduced to the Freedom Fighters and allowed them to use her secret Emerald Hill Zone lab as their base.

When Robotnik was deposed, Tekno began to team up more with Amy in keeping Mobius secure from the hordes of random criminals and (more frequently) nutters who were springing up, including the Doctor Robotnik Appreciation Tribe, Max Gamble and Agent X. She also helped rescue Shortfuse from the alien Insectra Empire, helping end their war with the Bluurgh in the process, and visited Earth while returning to Mobius, making an enemy of Colonel Granite in the process. Eventually she and Amy were sought up by the mysterious Eternity Ring, a sentient dimensional warp which sent them on missions to right wrongs and fight injustice throughout time and space (possibly inspired by Quantum Leap as it features a similar premise). She even witnessed the beginning of life on Mobius, discovering it was created by dinosaurs (in space suits) working for an unspecified employer (hinted to be God).

Eventually she and Amy returned to Mobius, and Tekno began assisting Sonic in investigating the New Zones. Her final appearance in STC had her & the other Freedom Fighters attempting to stop Robotnik from draining the life-force from Mobius and causing a devastating environmental collapse.

In unofficial continuation Sonic the Comic Online, Tekno built a new suit of armour for Shortfuse so he could continue to fight crime. When it appeared when he was responsible for a series of crimes, she reluctantly investigated and discovered the armour had been tampered with so an unknown figure could control Shorty. She saved him by deactivating the armour, but the two of them were subsequently sucked through the Eternity Ring to an unknown dimension...

Trivia

 * Tekno makes a brief uncanonical cameo appearance in #134 of the Archie Sonic comics, done as one of several admitted in-joke tributes by the artist Jon Gray. This happened without the consent of Tekno's creator/copyright-holder Lew Stringer which is why it is not considered part of the STC canon.