Here are some pun-based character names for a machine helper, based on famous people or characters, playing on their names and/or traits:

Based on Appearance/Personality:

• Data Decker (Data from Star Trek): If the helper is sleek and efficient.
• Hal 9000-and-a-Half: A playful take on the famously malfunctioning computer from 2001, implying a slightly quirky but ultimately helpful nature.
• The Iron Maid (Iron Man): For a helper that's strong and reliable, perhaps with a slightly stern demeanor.
• Wonder Bot (Wonder Woman): If the helper is powerful and resourceful.
• Captain Cache (Captain America): Suggesting a helper that stores and retrieves information effectively.
• Sherlock Holmes-ware: For a helper that is adept at problem-solving and deduction.
• The Matrix Reloaded (The Matrix): If the helper is constantly updating and improving itself.

Based on Function/Abilities:

• Watt-son (Watson): A pun on both the name and the concept of power/energy.
• Code-zilla (Godzilla): For a helper that handles large amounts of code or data.
• Byte-ron (Byron): A pun relating to computer bytes and a famous poet (for a more literary helper).
• Ada-ptive (Ada Lovelace): Highlighting the helper's ability to adapt to different situations.
• Archimedes' Screw-driver: For a helper that excels at fixing things.

More Abstract/Humorous Options:

• The Help-bot: A simple, straightforward, and punny name.
• Auto-matic: A pun on automation and the helper's automatic functions.
• Digi-talented: A pun highlighting the helper's digital skills.
• Pro-cess-or: A pun on the computer processor and the helper's processing capabilities.

The best choice will depend on the specific context and desired tone of your project. Consider the helper's personality, abilities, and overall aesthetic when making your selection.