Masuo
- Masuo is a native of the Legends World from the Legends portion of the Generation 1 continuity family.

Masuo (ますお) is the son of Waspinator and brother to Takahiro.
Fiction
[edit]Legends World
[edit]Masuo celebrated Christmas with his family. Merry X'mas!! When Tankor tried to convert him into a Generation 1 fan, Waspinator-turned-Thrust refused on behalf of his kids, telling Tankor they had no idea who the original Optimus Prime was. I'm Tankor, dana!
Toys
[edit]Generations
[edit]
- Acid Storm & Venin (Legends Class, 2014)
{{#switch: {{{1}}}|plural = The {{{toy}}} were repurposed|{{#if:|The toy|This toy}} was repurposed}} as Masuo{{#if:"Merry X'mas!!"| by "Merry X'mas!!"|}}{{#if:2014| in 2014|}}.
- Part of the seventh wave of 2012-onwards Generations Legends Class toys, Thrilling 30 Venin (renamed due to obvious trademark reasons) is a redeco of Waspinator, in sorta-Generation 1 Insecticon colors. Venin can transform into a purple insect, a robot with 3 mm-compatible hands, and a gun with a 5 mm handle. He has an autotransformation feature that folds up his wings when his gun barrel is extended.
- He was only available in a two-pack with the Legends Class Acid Storm. Compared to Waspinator, many of Venin's parts are considerably softer, giving him a much less solid feel.
| {{#if:Generations|Generations mold:|}} Waspinator (Legends Class partner)
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